30 files changed, 225 insertions, 239 deletions

diff --git a/fs/partitions/acorn.c b/fs/partitions/acorn.c
index a97b477ac0fc..6921e7890be6 100644
--- a/fs/partitions/acorn.c
+++ b/fs/partitions/acorn.c
@@ -70,14 +70,14 @@ struct riscix_record {
 
 #if defined(CONFIG_ACORN_PARTITION_CUMANA) || \
         defined(CONFIG_ACORN_PARTITION_ADFS)
-static int
-riscix_partition(struct parsed_partitions *state, struct block_device *bdev,
-                unsigned long first_sect, int slot, unsigned long nr_sects)
+static int riscix_partition(struct parsed_partitions *state,
+                            unsigned long first_sect, int slot,
+                            unsigned long nr_sects)
 {
         Sector sect;
         struct riscix_record *rr;
         
-        rr = (struct riscix_record *)read_dev_sector(bdev, first_sect, &sect);
+        rr = read_part_sector(state, first_sect, &sect);
         if (!rr)
                 return -1;
 
@@ -123,9 +123,9 @@ struct linux_part {
 
 #if defined(CONFIG_ACORN_PARTITION_CUMANA) || \
         defined(CONFIG_ACORN_PARTITION_ADFS)
-static int
-linux_partition(struct parsed_partitions *state, struct block_device *bdev,
-                unsigned long first_sect, int slot, unsigned long nr_sects)
+static int linux_partition(struct parsed_partitions *state,
+                           unsigned long first_sect, int slot,
+                           unsigned long nr_sects)
 {
         Sector sect;
         struct linux_part *linuxp;
@@ -135,7 +135,7 @@ linux_partition(struct parsed_partitions *state, struct block_device *bdev,
 
         put_partition(state, slot++, first_sect, size);
 
-        linuxp = (struct linux_part *)read_dev_sector(bdev, first_sect, &sect);
+        linuxp = read_part_sector(state, first_sect, &sect);
         if (!linuxp)
                 return -1;
 
@@ -157,8 +157,7 @@ linux_partition(struct parsed_partitions *state, struct block_device *bdev,
 #endif
 
 #ifdef CONFIG_ACORN_PARTITION_CUMANA
-int
-adfspart_check_CUMANA(struct parsed_partitions *state, struct block_device *bdev)
+int adfspart_check_CUMANA(struct parsed_partitions *state)
 {
         unsigned long first_sector = 0;
         unsigned int start_blk = 0;
@@ -185,7 +184,7 @@ adfspart_check_CUMANA(struct parsed_partitions *state, struct block_device *bdev
                 struct adfs_discrecord *dr;
                 unsigned int nr_sects;
 
-                data = read_dev_sector(bdev, start_blk * 2 + 6, &sect);
+                data = read_part_sector(state, start_blk * 2 + 6, &sect);
                 if (!data)
                         return -1;
 
@@ -217,14 +216,14 @@ adfspart_check_CUMANA(struct parsed_partitions *state, struct block_device *bdev
 #ifdef CONFIG_ACORN_PARTITION_RISCIX
                 case PARTITION_RISCIX_SCSI:
                         /* RISCiX - we don't know how to find the next one. */
-                        slot = riscix_partition(state, bdev, first_sector,
-                                                 slot, nr_sects);
+                        slot = riscix_partition(state, first_sector, slot,
+                                                nr_sects);
                         break;
 #endif
 
                 case PARTITION_LINUX:
-                        slot = linux_partition(state, bdev, first_sector,
-                                                slot, nr_sects);
+                        slot = linux_partition(state, first_sector, slot,
+                                               nr_sects);
                         break;
                 }
                 put_dev_sector(sect);
@@ -249,8 +248,7 @@ adfspart_check_CUMANA(struct parsed_partitions *state, struct block_device *bdev
  *          hda1 = ADFS partition on first drive.
  *          hda2 = non-ADFS partition.
  */
-int
-adfspart_check_ADFS(struct parsed_partitions *state, struct block_device *bdev)
+int adfspart_check_ADFS(struct parsed_partitions *state)
 {
         unsigned long start_sect, nr_sects, sectscyl, heads;
         Sector sect;
@@ -259,7 +257,7 @@ adfspart_check_ADFS(struct parsed_partitions *state, struct block_device *bdev)
         unsigned char id;
         int slot = 1;
 
-        data = read_dev_sector(bdev, 6, &sect);
+        data = read_part_sector(state, 6, &sect);
         if (!data)
                 return -1;
 
@@ -278,21 +276,21 @@ adfspart_check_ADFS(struct parsed_partitions *state, struct block_device *bdev)
         /*
          * Work out start of non-adfs partition.
          */
-        nr_sects = (bdev->bd_inode->i_size >> 9) - start_sect;
+        nr_sects = (state->bdev->bd_inode->i_size >> 9) - start_sect;
 
         if (start_sect) {
                 switch (id) {
 #ifdef CONFIG_ACORN_PARTITION_RISCIX
                 case PARTITION_RISCIX_SCSI:
                 case PARTITION_RISCIX_MFM:
-                        slot = riscix_partition(state, bdev, start_sect,
-                                                 slot, nr_sects);
+                        slot = riscix_partition(state, start_sect, slot,
+                                                nr_sects);
                         break;
 #endif
 
                 case PARTITION_LINUX:
-                        slot = linux_partition(state, bdev, start_sect,
-                                                slot, nr_sects);
+                        slot = linux_partition(state, start_sect, slot,
+                                               nr_sects);
                         break;
                 }
         }
@@ -308,10 +306,11 @@ struct ics_part {
         __le32 size;
 };
 
-static int adfspart_check_ICSLinux(struct block_device *bdev, unsigned long block)
+static int adfspart_check_ICSLinux(struct parsed_partitions *state,
+                                   unsigned long block)
 {
         Sector sect;
-        unsigned char *data = read_dev_sector(bdev, block, &sect);
+        unsigned char *data = read_part_sector(state, block, &sect);
         int result = 0;
 
         if (data) {
@@ -349,8 +348,7 @@ static inline int valid_ics_sector(const unsigned char *data)
  *          hda2 = ADFS partition 1 on first drive.
  *              ..etc..
  */
-int
-adfspart_check_ICS(struct parsed_partitions *state, struct block_device *bdev)
+int adfspart_check_ICS(struct parsed_partitions *state)
 {
         const unsigned char *data;
         const struct ics_part *p;
@@ -360,7 +358,7 @@ adfspart_check_ICS(struct parsed_partitions *state, struct block_device *bdev)
         /*
          * Try ICS style partitions - sector 0 contains partition info.
          */
-        data = read_dev_sector(bdev, 0, &sect);
+        data = read_part_sector(state, 0, &sect);
         if (!data)
                 return -1;
 
@@ -392,7 +390,7 @@ adfspart_check_ICS(struct parsed_partitions *state, struct block_device *bdev)
                          * partition is.  We must not make this visible
                          * to the filesystem.
                          */
-                        if (size > 1 && adfspart_check_ICSLinux(bdev, start)) {
+                        if (size > 1 && adfspart_check_ICSLinux(state, start)) {
                                 start += 1;
                                 size -= 1;
                         }
@@ -446,8 +444,7 @@ static inline int valid_ptec_sector(const unsigned char *data)
  *          hda2 = ADFS partition 1 on first drive.
  *              ..etc..
  */
-int
-adfspart_check_POWERTEC(struct parsed_partitions *state, struct block_device *bdev)
+int adfspart_check_POWERTEC(struct parsed_partitions *state)
 {
         Sector sect;
         const unsigned char *data;
@@ -455,7 +452,7 @@ adfspart_check_POWERTEC(struct parsed_partitions *state, struct block_device *bd
         int slot = 1;
         int i;
 
-        data = read_dev_sector(bdev, 0, &sect);
+        data = read_part_sector(state, 0, &sect);
         if (!data)
                 return -1;
 
@@ -508,8 +505,7 @@ static const char eesox_name[] = {
  *  1. The individual ADFS boot block entries that are placed on the disk.
  *  2. The start address of the next entry.
  */
-int
-adfspart_check_EESOX(struct parsed_partitions *state, struct block_device *bdev)
+int adfspart_check_EESOX(struct parsed_partitions *state)
 {
         Sector sect;
         const unsigned char *data;
@@ -518,7 +514,7 @@ adfspart_check_EESOX(struct parsed_partitions *state, struct block_device *bdev)
         sector_t start = 0;
         int i, slot = 1;
 
-        data = read_dev_sector(bdev, 7, &sect);
+        data = read_part_sector(state, 7, &sect);
         if (!data)
                 return -1;
 
@@ -545,7 +541,7 @@ adfspart_check_EESOX(struct parsed_partitions *state, struct block_device *bdev)
         if (i != 0) {
                 sector_t size;
 
-                size = get_capacity(bdev->bd_disk);
+                size = get_capacity(state->bdev->bd_disk);
                 put_partition(state, slot++, start, size - start);
                 printk("\n");
         }
diff --git a/fs/partitions/acorn.h b/fs/partitions/acorn.h
index 81fd50ecc080..ede828529692 100644
--- a/fs/partitions/acorn.h
+++ b/fs/partitions/acorn.h
@@ -7,8 +7,8 @@
  *  format, and everyone stick to it?
  */
 
-int adfspart_check_CUMANA(struct parsed_partitions *state, struct block_device *bdev);
-int adfspart_check_ADFS(struct parsed_partitions *state, struct block_device *bdev);
-int adfspart_check_ICS(struct parsed_partitions *state, struct block_device *bdev);
-int adfspart_check_POWERTEC(struct parsed_partitions *state, struct block_device *bdev);
-int adfspart_check_EESOX(struct parsed_partitions *state, struct block_device *bdev);
+int adfspart_check_CUMANA(struct parsed_partitions *state);
+int adfspart_check_ADFS(struct parsed_partitions *state);
+int adfspart_check_ICS(struct parsed_partitions *state);
+int adfspart_check_POWERTEC(struct parsed_partitions *state);
+int adfspart_check_EESOX(struct parsed_partitions *state);
diff --git a/fs/partitions/amiga.c b/fs/partitions/amiga.c
index 9917a8c360f2..ba443d4229f8 100644
--- a/fs/partitions/amiga.c
+++ b/fs/partitions/amiga.c
@@ -23,8 +23,7 @@ checksum_block(__be32 *m, int size)
         return sum;
 }
 
-int
-amiga_partition(struct parsed_partitions *state, struct block_device *bdev)
+int amiga_partition(struct parsed_partitions *state)
 {
         Sector sect;
         unsigned char *data;
@@ -38,11 +37,11 @@ amiga_partition(struct parsed_partitions *state, struct block_device *bdev)
         for (blk = 0; ; blk++, put_dev_sector(sect)) {
                 if (blk == RDB_ALLOCATION_LIMIT)
                         goto rdb_done;
-                data = read_dev_sector(bdev, blk, &sect);
+                data = read_part_sector(state, blk, &sect);
                 if (!data) {
                         if (warn_no_part)
                                 printk("Dev %s: unable to read RDB block %d\n",
-                                       bdevname(bdev, b), blk);
+                                       bdevname(state->bdev, b), blk);
                         res = -1;
                         goto rdb_done;
                 }
@@ -64,7 +63,7 @@ amiga_partition(struct parsed_partitions *state, struct block_device *bdev)
                 }
 
                 printk("Dev %s: RDB in block %d has bad checksum\n",
-                               bdevname(bdev, b), blk);
+                       bdevname(state->bdev, b), blk);
         }
 
         /* blksize is blocks per 512 byte standard block */
@@ -75,11 +74,11 @@ amiga_partition(struct parsed_partitions *state, struct block_device *bdev)
         put_dev_sector(sect);
         for (part = 1; blk>0 && part<=16; part++, put_dev_sector(sect)) {
                 blk *= blksize; /* Read in terms partition table understands */
-                data = read_dev_sector(bdev, blk, &sect);
+                data = read_part_sector(state, blk, &sect);
                 if (!data) {
                         if (warn_no_part)
                                 printk("Dev %s: unable to read partition block %d\n",
-                                       bdevname(bdev, b), blk);
+                                       bdevname(state->bdev, b), blk);
                         res = -1;
                         goto rdb_done;
                 }
diff --git a/fs/partitions/amiga.h b/fs/partitions/amiga.h
index 2f3e9ce22d53..d094585cadaa 100644
--- a/fs/partitions/amiga.h
+++ b/fs/partitions/amiga.h
@@ -2,5 +2,5 @@
  *  fs/partitions/amiga.h
  */
 
-int amiga_partition(struct parsed_partitions *state, struct block_device *bdev);
+int amiga_partition(struct parsed_partitions *state);
 
diff --git a/fs/partitions/atari.c b/fs/partitions/atari.c
index 1f3572d5b755..4439ff1b6cec 100644
--- a/fs/partitions/atari.c
+++ b/fs/partitions/atari.c
@@ -30,7 +30,7 @@ static inline int OK_id(char *s)
                 memcmp (s, "RAW", 3) == 0 ;
 }
 
-int atari_partition(struct parsed_partitions *state, struct block_device *bdev)
+int atari_partition(struct parsed_partitions *state)
 {
         Sector sect;
         struct rootsector *rs;
@@ -42,12 +42,12 @@ int atari_partition(struct parsed_partitions *state, struct block_device *bdev)
         int part_fmt = 0; /* 0:unknown, 1:AHDI, 2:ICD/Supra */
 #endif
 
-        rs = (struct rootsector *) read_dev_sector(bdev, 0, &sect);
+        rs = read_part_sector(state, 0, &sect);
         if (!rs)
                 return -1;
 
         /* Verify this is an Atari rootsector: */
-        hd_size = bdev->bd_inode->i_size >> 9;
+        hd_size = state->bdev->bd_inode->i_size >> 9;
         if (!VALID_PARTITION(&rs->part[0], hd_size) &&
             !VALID_PARTITION(&rs->part[1], hd_size) &&
             !VALID_PARTITION(&rs->part[2], hd_size) &&
@@ -84,7 +84,7 @@ int atari_partition(struct parsed_partitions *state, struct block_device *bdev)
                 printk(" XGM<");
                 partsect = extensect = be32_to_cpu(pi->st);
                 while (1) {
-                        xrs = (struct rootsector *)read_dev_sector(bdev, partsect, &sect2);
+                        xrs = read_part_sector(state, partsect, &sect2);
                         if (!xrs) {
                                 printk (" block %ld read failed\n", partsect);
                                 put_dev_sector(sect);
diff --git a/fs/partitions/atari.h b/fs/partitions/atari.h
index 63186b00e135..fe2d32a89f36 100644
--- a/fs/partitions/atari.h
+++ b/fs/partitions/atari.h
@@ -31,4 +31,4 @@ struct rootsector
   u16 checksum;                 /* checksum for bootable disks */
 } __attribute__((__packed__));
 
-int atari_partition(struct parsed_partitions *state, struct block_device *bdev);
+int atari_partition(struct parsed_partitions *state);
diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 4f1fee0355ad..a19995c6f6af 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -45,7 +45,7 @@ extern void md_autodetect_dev(dev_t dev);
 
 int warn_no_part = 1; /*This is ugly: should make genhd removable media aware*/
 
-static int (*check_part[])(struct parsed_partitions *, struct block_device *) = {
+static int (*check_part[])(struct parsed_partitions *) = {
         /*
          * Probe partition formats with tables at disk address 0
          * that also have an ADFS boot block at 0xdc0.
@@ -165,6 +165,7 @@ check_partition(struct gendisk *hd, struct block_device *bdev)
         if (!state)
                 return NULL;
 
+        state->bdev = bdev;
         disk_name(hd, 0, state->name);
         printk(KERN_INFO " %s:", state->name);
         if (isdigit(state->name[strlen(state->name)-1]))
@@ -174,7 +175,7 @@ check_partition(struct gendisk *hd, struct block_device *bdev)
         i = res = err = 0;
         while (!res && check_part[i]) {
                 memset(&state->parts, 0, sizeof(state->parts));
-                res = check_part[i++](state, bdev);
+                res = check_part[i++](state);
                 if (res < 0) {
                         /* We have hit an I/O error which we don't report now.
                         * But record it, and let the others do their job.
diff --git a/fs/partitions/check.h b/fs/partitions/check.h
index 98dbe1a84528..4b31a97775be 100644
--- a/fs/partitions/check.h
+++ b/fs/partitions/check.h
@@ -6,6 +6,7 @@
  * description.
  */
 struct parsed_partitions {
+        struct block_device *bdev;
         char name[BDEVNAME_SIZE];
         struct {
                 sector_t from;
@@ -16,6 +17,12 @@ struct parsed_partitions {
         int limit;
 };
 
+static inline void *read_part_sector(struct parsed_partitions *state,
+                                     sector_t n, Sector *p)
+{
+        return read_dev_sector(state->bdev, n, p);
+}
+
 static inline void
 put_partition(struct parsed_partitions *p, int n, sector_t from, sector_t size)
 {
diff --git a/fs/partitions/efi.c b/fs/partitions/efi.c
index 91babdae7587..9e346c19bbba 100644
--- a/fs/partitions/efi.c
+++ b/fs/partitions/efi.c
@@ -140,8 +140,7 @@ efi_crc32(const void *buf, unsigned long len)
  *  the part[0] entry for this disk, and is the number of
  *  physical sectors available on the disk.
  */
-static u64
-last_lba(struct block_device *bdev)
+static u64 last_lba(struct block_device *bdev)
 {
         if (!bdev || !bdev->bd_inode)
                 return 0;
@@ -181,27 +180,28 @@ is_pmbr_valid(legacy_mbr *mbr)
 
 /**
  * read_lba(): Read bytes from disk, starting at given LBA
- * @bdev
+ * @state
  * @lba
  * @buffer
  * @size_t
  *
- * Description:  Reads @count bytes from @bdev into @buffer.
+ * Description: Reads @count bytes from @state->bdev into @buffer.
  * Returns number of bytes read on success, 0 on error.
  */
-static size_t
-read_lba(struct block_device *bdev, u64 lba, u8 * buffer, size_t count)
+static size_t read_lba(struct parsed_partitions *state,
+                       u64 lba, u8 *buffer, size_t count)
 {
         size_t totalreadcount = 0;
+        struct block_device *bdev = state->bdev;
         sector_t n = lba * (bdev_logical_block_size(bdev) / 512);
 
-        if (!bdev || !buffer || lba > last_lba(bdev))
+        if (!buffer || lba > last_lba(bdev))
                 return 0;
 
         while (count) {
                 int copied = 512;
                 Sector sect;
-                unsigned char *data = read_dev_sector(bdev, n++, &sect);
+                unsigned char *data = read_part_sector(state, n++, &sect);
                 if (!data)
                         break;
                 if (copied > count)
@@ -217,19 +217,20 @@ read_lba(struct block_device *bdev, u64 lba, u8 * buffer, size_t count)
 
 /**
  * alloc_read_gpt_entries(): reads partition entries from disk
- * @bdev
+ * @state
  * @gpt - GPT header
  * 
  * Description: Returns ptes on success,  NULL on error.
  * Allocates space for PTEs based on information found in @gpt.
  * Notes: remember to free pte when you're done!
  */
-static gpt_entry *
-alloc_read_gpt_entries(struct block_device *bdev, gpt_header *gpt)
+static gpt_entry *alloc_read_gpt_entries(struct parsed_partitions *state,
+                                         gpt_header *gpt)
 {
         size_t count;
         gpt_entry *pte;
-        if (!bdev || !gpt)
+
+        if (!gpt)
                 return NULL;
 
         count = le32_to_cpu(gpt->num_partition_entries) *
@@ -240,7 +241,7 @@ alloc_read_gpt_entries(struct block_device *bdev, gpt_header *gpt)
         if (!pte)
                 return NULL;
 
-        if (read_lba(bdev, le64_to_cpu(gpt->partition_entry_lba),
+        if (read_lba(state, le64_to_cpu(gpt->partition_entry_lba),
                      (u8 *) pte,
                      count) < count) {
                 kfree(pte);
@@ -252,27 +253,24 @@ alloc_read_gpt_entries(struct block_device *bdev, gpt_header *gpt)
 
 /**
  * alloc_read_gpt_header(): Allocates GPT header, reads into it from disk
- * @bdev
+ * @state
  * @lba is the Logical Block Address of the partition table
  * 
  * Description: returns GPT header on success, NULL on error.   Allocates
- * and fills a GPT header starting at @ from @bdev.
+ * and fills a GPT header starting at @ from @state->bdev.
  * Note: remember to free gpt when finished with it.
  */
-static gpt_header *
-alloc_read_gpt_header(struct block_device *bdev, u64 lba)
+static gpt_header *alloc_read_gpt_header(struct parsed_partitions *state,
+                                         u64 lba)
 {
         gpt_header *gpt;
-        unsigned ssz = bdev_logical_block_size(bdev);
-
-        if (!bdev)
-                return NULL;
+        unsigned ssz = bdev_logical_block_size(state->bdev);
 
         gpt = kzalloc(ssz, GFP_KERNEL);
         if (!gpt)
                 return NULL;
 
-        if (read_lba(bdev, lba, (u8 *) gpt, ssz) < ssz) {
+        if (read_lba(state, lba, (u8 *) gpt, ssz) < ssz) {
                 kfree(gpt);
                 gpt=NULL;
                 return NULL;
@@ -283,7 +281,7 @@ alloc_read_gpt_header(struct block_device *bdev, u64 lba)
 
 /**
  * is_gpt_valid() - tests one GPT header and PTEs for validity
- * @bdev
+ * @state
  * @lba is the logical block address of the GPT header to test
  * @gpt is a GPT header ptr, filled on return.
  * @ptes is a PTEs ptr, filled on return.
@@ -291,16 +289,15 @@ alloc_read_gpt_header(struct block_device *bdev, u64 lba)
  * Description: returns 1 if valid,  0 on error.
  * If valid, returns pointers to newly allocated GPT header and PTEs.
  */
-static int
-is_gpt_valid(struct block_device *bdev, u64 lba,
-             gpt_header **gpt, gpt_entry **ptes)
+static int is_gpt_valid(struct parsed_partitions *state, u64 lba,
+                        gpt_header **gpt, gpt_entry **ptes)
 {
         u32 crc, origcrc;
         u64 lastlba;
 
-        if (!bdev || !gpt || !ptes)
+        if (!ptes)
                 return 0;
-        if (!(*gpt = alloc_read_gpt_header(bdev, lba)))
+        if (!(*gpt = alloc_read_gpt_header(state, lba)))
                 return 0;
 
         /* Check the GUID Partition Table signature */
@@ -336,7 +333,7 @@ is_gpt_valid(struct block_device *bdev, u64 lba,
         /* Check the first_usable_lba and last_usable_lba are
          * within the disk.
          */
-        lastlba = last_lba(bdev);
+        lastlba = last_lba(state->bdev);
         if (le64_to_cpu((*gpt)->first_usable_lba) > lastlba) {
                 pr_debug("GPT: first_usable_lba incorrect: %lld > %lld\n",
                          (unsigned long long)le64_to_cpu((*gpt)->first_usable_lba),
@@ -350,7 +347,7 @@ is_gpt_valid(struct block_device *bdev, u64 lba,
                 goto fail;
         }
 
-        if (!(*ptes = alloc_read_gpt_entries(bdev, *gpt)))
+        if (!(*ptes = alloc_read_gpt_entries(state, *gpt)))
                 goto fail;
 
         /* Check the GUID Partition Entry Array CRC */
@@ -495,7 +492,7 @@ compare_gpts(gpt_header *pgpt, gpt_header *agpt, u64 lastlba)
 
 /**
  * find_valid_gpt() - Search disk for valid GPT headers and PTEs
- * @bdev
+ * @state
  * @gpt is a GPT header ptr, filled on return.
  * @ptes is a PTEs ptr, filled on return.
  * Description: Returns 1 if valid, 0 on error.
@@ -508,24 +505,25 @@ compare_gpts(gpt_header *pgpt, gpt_header *agpt, u64 lastlba)
  * This protects against devices which misreport their size, and forces
  * the user to decide to use the Alternate GPT.
  */
-static int
-find_valid_gpt(struct block_device *bdev, gpt_header **gpt, gpt_entry **ptes)
+static int find_valid_gpt(struct parsed_partitions *state, gpt_header **gpt,
+                          gpt_entry **ptes)
 {
         int good_pgpt = 0, good_agpt = 0, good_pmbr = 0;
         gpt_header *pgpt = NULL, *agpt = NULL;
         gpt_entry *pptes = NULL, *aptes = NULL;
         legacy_mbr *legacymbr;
         u64 lastlba;
-        if (!bdev || !gpt || !ptes)
+
+        if (!ptes)
                 return 0;
 
-        lastlba = last_lba(bdev);
+        lastlba = last_lba(state->bdev);
         if (!force_gpt) {
                 /* This will be added to the EFI Spec. per Intel after v1.02. */
                 legacymbr = kzalloc(sizeof (*legacymbr), GFP_KERNEL);
                 if (legacymbr) {
-                        read_lba(bdev, 0, (u8 *) legacymbr,
-                                 sizeof (*legacymbr));
+                        read_lba(state, 0, (u8 *) legacymbr,
+                                 sizeof (*legacymbr));
                         good_pmbr = is_pmbr_valid(legacymbr);
                         kfree(legacymbr);
                 }
@@ -533,15 +531,14 @@ find_valid_gpt(struct block_device *bdev, gpt_header **gpt, gpt_entry **ptes)
                         goto fail;
         }
 
-        good_pgpt = is_gpt_valid(bdev, GPT_PRIMARY_PARTITION_TABLE_LBA,
+        good_pgpt = is_gpt_valid(state, GPT_PRIMARY_PARTITION_TABLE_LBA,
                                  &pgpt, &pptes);
         if (good_pgpt)
-                good_agpt = is_gpt_valid(bdev,
+                good_agpt = is_gpt_valid(state,
                                          le64_to_cpu(pgpt->alternate_lba),
                                          &agpt, &aptes);
         if (!good_agpt && force_gpt)
-                good_agpt = is_gpt_valid(bdev, lastlba,
-                                         &agpt, &aptes);
+                good_agpt = is_gpt_valid(state, lastlba, &agpt, &aptes);
 
         /* The obviously unsuccessful case */
         if (!good_pgpt && !good_agpt)
@@ -583,9 +580,8 @@ find_valid_gpt(struct block_device *bdev, gpt_header **gpt, gpt_entry **ptes)
 }
 
 /**
- * efi_partition(struct parsed_partitions *state, struct block_device *bdev)
+ * efi_partition(struct parsed_partitions *state)
  * @state
- * @bdev
  *
  * Description: called from check.c, if the disk contains GPT
  * partitions, sets up partition entries in the kernel.
@@ -602,15 +598,14 @@ find_valid_gpt(struct block_device *bdev, gpt_header **gpt, gpt_entry **ptes)
  *  1 if successful
  *
  */
-int
-efi_partition(struct parsed_partitions *state, struct block_device *bdev)
+int efi_partition(struct parsed_partitions *state)
 {
         gpt_header *gpt = NULL;
         gpt_entry *ptes = NULL;
         u32 i;
-        unsigned ssz = bdev_logical_block_size(bdev) / 512;
+        unsigned ssz = bdev_logical_block_size(state->bdev) / 512;
 
-        if (!find_valid_gpt(bdev, &gpt, &ptes) || !gpt || !ptes) {
+        if (!find_valid_gpt(state, &gpt, &ptes) || !gpt || !ptes) {
                 kfree(gpt);
                 kfree(ptes);
                 return 0;
@@ -623,7 +618,7 @@ efi_partition(struct parsed_partitions *state, struct block_device *bdev)
                 u64 size = le64_to_cpu(ptes[i].ending_lba) -
                            le64_to_cpu(ptes[i].starting_lba) + 1ULL;
 
-                if (!is_pte_valid(&ptes[i], last_lba(bdev)))
+                if (!is_pte_valid(&ptes[i], last_lba(state->bdev)))
                         continue;
 
                 put_partition(state, i+1, start * ssz, size * ssz);
diff --git a/fs/partitions/efi.h b/fs/partitions/efi.h
index 6998b589abf9..b69ab729558f 100644
--- a/fs/partitions/efi.h
+++ b/fs/partitions/efi.h
@@ -110,7 +110,7 @@ typedef struct _legacy_mbr {
 } __attribute__ ((packed)) legacy_mbr;
 
 /* Functions */
-extern int efi_partition(struct parsed_partitions *state, struct block_device *bdev);
+extern int efi_partition(struct parsed_partitions *state);
 
 #endif
 
diff --git a/fs/partitions/ibm.c b/fs/partitions/ibm.c
index fc71aab08460..3e73de5967ff 100644
--- a/fs/partitions/ibm.c
+++ b/fs/partitions/ibm.c
@@ -58,9 +58,9 @@ cchhb2blk (struct vtoc_cchhb *ptr, struct hd_geometry *geo) {
 
 /*
  */
-int
-ibm_partition(struct parsed_partitions *state, struct block_device *bdev)
+int ibm_partition(struct parsed_partitions *state)
 {
+        struct block_device *bdev = state->bdev;
         int blocksize, res;
         loff_t i_size, offset, size, fmt_size;
         dasd_information2_t *info;
@@ -100,7 +100,8 @@ ibm_partition(struct parsed_partitions *state, struct block_device *bdev)
         /*
          * Get volume label, extract name and type.
          */
-        data = read_dev_sector(bdev, info->label_block*(blocksize/512), &sect);
+        data = read_part_sector(state, info->label_block*(blocksize/512),
+                                &sect);
         if (data == NULL)
                 goto out_readerr;
 
@@ -193,8 +194,8 @@ ibm_partition(struct parsed_partitions *state, struct block_device *bdev)
                          */
                         blk = cchhb2blk(&label->vol.vtoc, geo) + 1;
                         counter = 0;
-                        data = read_dev_sector(bdev, blk * (blocksize/512),
-                                               &sect);
+                        data = read_part_sector(state, blk * (blocksize/512),
+                                                &sect);
                         while (data != NULL) {
                                 struct vtoc_format1_label f1;
 
@@ -208,9 +209,8 @@ ibm_partition(struct parsed_partitions *state, struct block_device *bdev)
                                     || f1.DS1FMTID == _ascebc['7']
                                     || f1.DS1FMTID == _ascebc['9']) {
                                         blk++;
-                                        data = read_dev_sector(bdev, blk *
-                                                               (blocksize/512),
-                                                                &sect);
+                                        data = read_part_sector(state,
+                                                blk * (blocksize/512), &sect);
                                         continue;
                                 }
 
@@ -230,9 +230,8 @@ ibm_partition(struct parsed_partitions *state, struct block_device *bdev)
                                               size * (blocksize >> 9));
                                 counter++;
                                 blk++;
-                                data = read_dev_sector(bdev,
-                                                       blk * (blocksize/512),
-                                                       &sect);
+                                data = read_part_sector(state,
+                                                blk * (blocksize/512), &sect);
                         }
 
                         if (!data)
diff --git a/fs/partitions/ibm.h b/fs/partitions/ibm.h
index 31f85a6ac459..08fb0804a812 100644
--- a/fs/partitions/ibm.h
+++ b/fs/partitions/ibm.h
@@ -1 +1 @@
-int ibm_partition(struct parsed_partitions *, struct block_device *);
+int ibm_partition(struct parsed_partitions *);
diff --git a/fs/partitions/karma.c b/fs/partitions/karma.c
index 176d89bcf123..1cc928bb762f 100644
--- a/fs/partitions/karma.c
+++ b/fs/partitions/karma.c
@@ -9,7 +9,7 @@
 #include "check.h"
 #include "karma.h"
 
-int karma_partition(struct parsed_partitions *state, struct block_device *bdev)
+int karma_partition(struct parsed_partitions *state)
 {
         int i;
         int slot = 1;
@@ -29,7 +29,7 @@ int karma_partition(struct parsed_partitions *state, struct block_device *bdev)
         } __attribute__((packed)) *label;
         struct d_partition *p;
 
-        data = read_dev_sector(bdev, 0, &sect);
+        data = read_part_sector(state, 0, &sect);
         if (!data)
                 return -1;
 
diff --git a/fs/partitions/karma.h b/fs/partitions/karma.h
index ecf7d3f2a3d8..c764b2e9df21 100644
--- a/fs/partitions/karma.h
+++ b/fs/partitions/karma.h
@@ -4,5 +4,5 @@
 
 #define KARMA_LABEL_MAGIC               0xAB56
 
-int karma_partition(struct parsed_partitions *state, struct block_device *bdev);
+int karma_partition(struct parsed_partitions *state);
 
diff --git a/fs/partitions/ldm.c b/fs/partitions/ldm.c
index 8652fb99e962..3ceca05b668c 100644
--- a/fs/partitions/ldm.c
+++ b/fs/partitions/ldm.c
@@ -309,7 +309,7 @@ static bool ldm_compare_tocblocks (const struct tocblock *toc1,
 
 /**
  * ldm_validate_privheads - Compare the primary privhead with its backups
- * @bdev:  Device holding the LDM Database
+ * @state: Partition check state including device holding the LDM Database
  * @ph1:   Memory struct to fill with ph contents
  *
  * Read and compare all three privheads from disk.
@@ -321,8 +321,8 @@ static bool ldm_compare_tocblocks (const struct tocblock *toc1,
  * Return:  'true'   Success
  *          'false'  Error
  */
-static bool ldm_validate_privheads (struct block_device *bdev,
-                                    struct privhead *ph1)
+static bool ldm_validate_privheads(struct parsed_partitions *state,
+                                   struct privhead *ph1)
 {
         static const int off[3] = { OFF_PRIV1, OFF_PRIV2, OFF_PRIV3 };
         struct privhead *ph[3] = { ph1 };
@@ -332,7 +332,7 @@ static bool ldm_validate_privheads (struct block_device *bdev,
         long num_sects;
         int i;
 
-        BUG_ON (!bdev || !ph1);
+        BUG_ON (!state || !ph1);
 
         ph[1] = kmalloc (sizeof (*ph[1]), GFP_KERNEL);
         ph[2] = kmalloc (sizeof (*ph[2]), GFP_KERNEL);
@@ -346,8 +346,8 @@ static bool ldm_validate_privheads (struct block_device *bdev,
 
         /* Read and parse privheads */
         for (i = 0; i < 3; i++) {
-                data = read_dev_sector (bdev,
-                        ph[0]->config_start + off[i], &sect);
+                data = read_part_sector(state, ph[0]->config_start + off[i],
+                                        &sect);
                 if (!data) {
                         ldm_crit ("Disk read failed.");
                         goto out;
@@ -363,7 +363,7 @@ static bool ldm_validate_privheads (struct block_device *bdev,
                 }
         }
 
-        num_sects = bdev->bd_inode->i_size >> 9;
+        num_sects = state->bdev->bd_inode->i_size >> 9;
 
         if ((ph[0]->config_start > num_sects) ||
            ((ph[0]->config_start + ph[0]->config_size) > num_sects)) {
@@ -397,20 +397,20 @@ out:
 
 /**
  * ldm_validate_tocblocks - Validate the table of contents and its backups
- * @bdev:  Device holding the LDM Database
- * @base:  Offset, into @bdev, of the database
+ * @state: Partition check state including device holding the LDM Database
+ * @base:  Offset, into @state->bdev, of the database
  * @ldb:   Cache of the database structures
  *
  * Find and compare the four tables of contents of the LDM Database stored on
- * @bdev and return the parsed information into @toc1.
+ * @state->bdev and return the parsed information into @toc1.
  *
  * The offsets and sizes of the configs are range-checked against a privhead.
  *
  * Return:  'true'   @toc1 contains validated TOCBLOCK info
  *          'false'  @toc1 contents are undefined
  */
-static bool ldm_validate_tocblocks(struct block_device *bdev,
-        unsigned long base, struct ldmdb *ldb)
+static bool ldm_validate_tocblocks(struct parsed_partitions *state,
+                                   unsigned long base, struct ldmdb *ldb)
 {
         static const int off[4] = { OFF_TOCB1, OFF_TOCB2, OFF_TOCB3, OFF_TOCB4};
         struct tocblock *tb[4];
@@ -420,7 +420,7 @@ static bool ldm_validate_tocblocks(struct block_device *bdev,
         int i, nr_tbs;
         bool result = false;
 
-        BUG_ON(!bdev || !ldb);
+        BUG_ON(!state || !ldb);
         ph = &ldb->ph;
         tb[0] = &ldb->toc;
         tb[1] = kmalloc(sizeof(*tb[1]) * 3, GFP_KERNEL);
@@ -437,7 +437,7 @@ static bool ldm_validate_tocblocks(struct block_device *bdev,
          * skip any that fail as long as we get at least one valid TOCBLOCK.
          */
         for (nr_tbs = i = 0; i < 4; i++) {
-                data = read_dev_sector(bdev, base + off[i], &sect);
+                data = read_part_sector(state, base + off[i], &sect);
                 if (!data) {
                         ldm_error("Disk read failed for TOCBLOCK %d.", i);
                         continue;
@@ -473,7 +473,7 @@ err:
 
 /**
  * ldm_validate_vmdb - Read the VMDB and validate it
- * @bdev:  Device holding the LDM Database
+ * @state: Partition check state including device holding the LDM Database
  * @base:  Offset, into @bdev, of the database
  * @ldb:   Cache of the database structures
  *
@@ -483,8 +483,8 @@ err:
  * Return:  'true'   @ldb contains validated VBDB info
  *          'false'  @ldb contents are undefined
  */
-static bool ldm_validate_vmdb (struct block_device *bdev, unsigned long base,
-                               struct ldmdb *ldb)
+static bool ldm_validate_vmdb(struct parsed_partitions *state,
+                              unsigned long base, struct ldmdb *ldb)
 {
         Sector sect;
         u8 *data;
@@ -492,12 +492,12 @@ static bool ldm_validate_vmdb (struct block_device *bdev, unsigned long base,
         struct vmdb *vm;
         struct tocblock *toc;
 
-        BUG_ON (!bdev || !ldb);
+        BUG_ON (!state || !ldb);
 
         vm  = &ldb->vm;
         toc = &ldb->toc;
 
-        data = read_dev_sector (bdev, base + OFF_VMDB, &sect);
+        data = read_part_sector(state, base + OFF_VMDB, &sect);
         if (!data) {
                 ldm_crit ("Disk read failed.");
                 return false;
@@ -534,21 +534,21 @@ out:
 
 /**
  * ldm_validate_partition_table - Determine whether bdev might be a dynamic disk
- * @bdev:  Device holding the LDM Database
+ * @state: Partition check state including device holding the LDM Database
  *
  * This function provides a weak test to decide whether the device is a dynamic
  * disk or not.  It looks for an MS-DOS-style partition table containing at
  * least one partition of type 0x42 (formerly SFS, now used by Windows for
  * dynamic disks).
  *
- * N.B.  The only possible error can come from the read_dev_sector and that is
+ * N.B.  The only possible error can come from the read_part_sector and that is
  *       only likely to happen if the underlying device is strange.  If that IS
  *       the case we should return zero to let someone else try.
  *
- * Return:  'true'   @bdev is a dynamic disk
- *          'false'  @bdev is not a dynamic disk, or an error occurred
+ * Return:  'true'   @state->bdev is a dynamic disk
+ *          'false'  @state->bdev is not a dynamic disk, or an error occurred
  */
-static bool ldm_validate_partition_table (struct block_device *bdev)
+static bool ldm_validate_partition_table(struct parsed_partitions *state)
 {
         Sector sect;
         u8 *data;
@@ -556,9 +556,9 @@ static bool ldm_validate_partition_table (struct block_device *bdev)
         int i;
         bool result = false;
 
-        BUG_ON (!bdev);
+        BUG_ON(!state);
 
-        data = read_dev_sector (bdev, 0, &sect);
+        data = read_part_sector(state, 0, &sect);
         if (!data) {
                 ldm_crit ("Disk read failed.");
                 return false;
@@ -1391,8 +1391,8 @@ static bool ldm_frag_commit (struct list_head *frags, struct ldmdb *ldb)
 
 /**
  * ldm_get_vblks - Read the on-disk database of VBLKs into memory
- * @bdev:  Device holding the LDM Database
- * @base:  Offset, into @bdev, of the database
+ * @state: Partition check state including device holding the LDM Database
+ * @base:  Offset, into @state->bdev, of the database
  * @ldb:   Cache of the database structures
  *
  * To use the information from the VBLKs, they need to be read from the disk,
@@ -1401,8 +1401,8 @@ static bool ldm_frag_commit (struct list_head *frags, struct ldmdb *ldb)
  * Return:  'true'   All the VBLKs were read successfully
  *          'false'  An error occurred
  */
-static bool ldm_get_vblks (struct block_device *bdev, unsigned long base,
-                           struct ldmdb *ldb)
+static bool ldm_get_vblks(struct parsed_partitions *state, unsigned long base,
+                          struct ldmdb *ldb)
 {
         int size, perbuf, skip, finish, s, v, recs;
         u8 *data = NULL;
@@ -1410,7 +1410,7 @@ static bool ldm_get_vblks (struct block_device *bdev, unsigned long base,
         bool result = false;
         LIST_HEAD (frags);
 
-        BUG_ON (!bdev || !ldb);
+        BUG_ON(!state || !ldb);
 
         size   = ldb->vm.vblk_size;
         perbuf = 512 / size;
@@ -1418,7 +1418,7 @@ static bool ldm_get_vblks (struct block_device *bdev, unsigned long base,
         finish = (size * ldb->vm.last_vblk_seq) >> 9;
 
         for (s = skip; s < finish; s++) {               /* For each sector */
-                data = read_dev_sector (bdev, base + OFF_VMDB + s, &sect);
+                data = read_part_sector(state, base + OFF_VMDB + s, &sect);
                 if (!data) {
                         ldm_crit ("Disk read failed.");
                         goto out;
@@ -1474,8 +1474,7 @@ static void ldm_free_vblks (struct list_head *lh)
 
 /**
  * ldm_partition - Find out whether a device is a dynamic disk and handle it
- * @pp:    List of the partitions parsed so far
- * @bdev:  Device holding the LDM Database
+ * @state: Partition check state including device holding the LDM Database
  *
  * This determines whether the device @bdev is a dynamic disk and if so creates
  * the partitions necessary in the gendisk structure pointed to by @hd.
@@ -1485,21 +1484,21 @@ static void ldm_free_vblks (struct list_head *lh)
  * example, if the device is hda, we would have: hda1: LDM database, hda2, hda3,
  * and so on: the actual data containing partitions.
  *
- * Return:  1 Success, @bdev is a dynamic disk and we handled it
- *          0 Success, @bdev is not a dynamic disk
+ * Return:  1 Success, @state->bdev is a dynamic disk and we handled it
+ *          0 Success, @state->bdev is not a dynamic disk
  *         -1 An error occurred before enough information had been read
- *            Or @bdev is a dynamic disk, but it may be corrupted
+ *            Or @state->bdev is a dynamic disk, but it may be corrupted
  */
-int ldm_partition (struct parsed_partitions *pp, struct block_device *bdev)
+int ldm_partition(struct parsed_partitions *state)
 {
         struct ldmdb  *ldb;
         unsigned long base;
         int result = -1;
 
-        BUG_ON (!pp || !bdev);
+        BUG_ON(!state);
 
         /* Look for signs of a Dynamic Disk */
-        if (!ldm_validate_partition_table (bdev))
+        if (!ldm_validate_partition_table(state))
                 return 0;
 
         ldb = kmalloc (sizeof (*ldb), GFP_KERNEL);
@@ -1509,15 +1508,15 @@ int ldm_partition (struct parsed_partitions *pp, struct block_device *bdev)
         }
 
         /* Parse and check privheads. */
-        if (!ldm_validate_privheads (bdev, &ldb->ph))
+        if (!ldm_validate_privheads(state, &ldb->ph))
                 goto out;               /* Already logged */
 
         /* All further references are relative to base (database start). */
         base = ldb->ph.config_start;
 
         /* Parse and check tocs and vmdb. */
-        if (!ldm_validate_tocblocks (bdev, base, ldb) ||
-            !ldm_validate_vmdb      (bdev, base, ldb))
+        if (!ldm_validate_tocblocks(state, base, ldb) ||
+            !ldm_validate_vmdb(state, base, ldb))
                 goto out;               /* Already logged */
 
         /* Initialize vblk lists in ldmdb struct */
@@ -1527,13 +1526,13 @@ int ldm_partition (struct parsed_partitions *pp, struct block_device *bdev)
         INIT_LIST_HEAD (&ldb->v_comp);
         INIT_LIST_HEAD (&ldb->v_part);
 
-        if (!ldm_get_vblks (bdev, base, ldb)) {
+        if (!ldm_get_vblks(state, base, ldb)) {
                 ldm_crit ("Failed to read the VBLKs from the database.");
                 goto cleanup;
         }
 
         /* Finally, create the data partition devices. */
-        if (ldm_create_data_partitions (pp, ldb)) {
+        if (ldm_create_data_partitions(state, ldb)) {
                 ldm_debug ("Parsed LDM database successfully.");
                 result = 1;
         }
diff --git a/fs/partitions/ldm.h b/fs/partitions/ldm.h
index 30e08e809c1d..d1fb50b28d86 100644
--- a/fs/partitions/ldm.h
+++ b/fs/partitions/ldm.h
@@ -209,7 +209,7 @@ struct ldmdb {				/* Cache of the database */
         struct list_head v_part;
 };
 
-int ldm_partition (struct parsed_partitions *state, struct block_device *bdev);
+int ldm_partition(struct parsed_partitions *state);
 
 #endif /* _FS_PT_LDM_H_ */
 
diff --git a/fs/partitions/mac.c b/fs/partitions/mac.c
index d4a0fad3563b..13e27b0082f2 100644
--- a/fs/partitions/mac.c
+++ b/fs/partitions/mac.c
@@ -27,7 +27,7 @@ static inline void mac_fix_string(char *stg, int len)
                 stg[i] = 0;
 }
 
-int mac_partition(struct parsed_partitions *state, struct block_device *bdev)
+int mac_partition(struct parsed_partitions *state)
 {
         int slot = 1;
         Sector sect;
@@ -42,7 +42,7 @@ int mac_partition(struct parsed_partitions *state, struct block_device *bdev)
         struct mac_driver_desc *md;
 
         /* Get 0th block and look at the first partition map entry. */
-        md = (struct mac_driver_desc *) read_dev_sector(bdev, 0, &sect);
+        md = read_part_sector(state, 0, &sect);
         if (!md)
                 return -1;
         if (be16_to_cpu(md->signature) != MAC_DRIVER_MAGIC) {
@@ -51,7 +51,7 @@ int mac_partition(struct parsed_partitions *state, struct block_device *bdev)
         }
         secsize = be16_to_cpu(md->block_size);
         put_dev_sector(sect);
-        data = read_dev_sector(bdev, secsize/512, &sect);
+        data = read_part_sector(state, secsize/512, &sect);
         if (!data)
                 return -1;
         part = (struct mac_partition *) (data + secsize%512);
@@ -64,7 +64,7 @@ int mac_partition(struct parsed_partitions *state, struct block_device *bdev)
         for (blk = 1; blk <= blocks_in_map; ++blk) {
                 int pos = blk * secsize;
                 put_dev_sector(sect);
-                data = read_dev_sector(bdev, pos/512, &sect);
+                data = read_part_sector(state, pos/512, &sect);
                 if (!data)
                         return -1;
                 part = (struct mac_partition *) (data + pos%512);
@@ -123,7 +123,8 @@ int mac_partition(struct parsed_partitions *state, struct block_device *bdev)
         }
 #ifdef CONFIG_PPC_PMAC
         if (found_root_goodness)
-                note_bootable_part(bdev->bd_dev, found_root, found_root_goodness);
+                note_bootable_part(state->bdev->bd_dev, found_root,
+                                   found_root_goodness);
 #endif
 
         put_dev_sector(sect);
diff --git a/fs/partitions/mac.h b/fs/partitions/mac.h
index bbf26e1386fa..3c7d98436380 100644
--- a/fs/partitions/mac.h
+++ b/fs/partitions/mac.h
@@ -41,4 +41,4 @@ struct mac_driver_desc {
     /* ... more stuff */
 };
 
-int mac_partition(struct parsed_partitions *state, struct block_device *bdev);
+int mac_partition(struct parsed_partitions *state);
diff --git a/fs/partitions/msdos.c b/fs/partitions/msdos.c
index 90be97f1f5a8..645a68d8c055 100644
--- a/fs/partitions/msdos.c
+++ b/fs/partitions/msdos.c
@@ -64,7 +64,7 @@ msdos_magic_present(unsigned char *p)
 #define AIX_LABEL_MAGIC2        0xC2
 #define AIX_LABEL_MAGIC3        0xD4
 #define AIX_LABEL_MAGIC4        0xC1
-static int aix_magic_present(unsigned char *p, struct block_device *bdev)
+static int aix_magic_present(struct parsed_partitions *state, unsigned char *p)
 {
         struct partition *pt = (struct partition *) (p + 0x1be);
         Sector sect;
@@ -85,7 +85,7 @@ static int aix_magic_present(unsigned char *p, struct block_device *bdev)
                         is_extended_partition(pt))
                         return 0;
         }
-        d = read_dev_sector(bdev, 7, &sect);
+        d = read_part_sector(state, 7, &sect);
         if (d) {
                 if (d[0] == '_' && d[1] == 'L' && d[2] == 'V' && d[3] == 'M')
                         ret = 1;
@@ -105,15 +105,14 @@ static int aix_magic_present(unsigned char *p, struct block_device *bdev)
  * only for the actual data partitions.
  */
 
-static void
-parse_extended(struct parsed_partitions *state, struct block_device *bdev,
-                        sector_t first_sector, sector_t first_size)
+static void parse_extended(struct parsed_partitions *state,
+                           sector_t first_sector, sector_t first_size)
 {
         struct partition *p;
         Sector sect;
         unsigned char *data;
         sector_t this_sector, this_size;
-        sector_t sector_size = bdev_logical_block_size(bdev) / 512;
+        sector_t sector_size = bdev_logical_block_size(state->bdev) / 512;
         int loopct = 0;         /* number of links followed
                                    without finding a data partition */
         int i;
@@ -126,7 +125,7 @@ parse_extended(struct parsed_partitions *state, struct block_device *bdev,
                         return;
                 if (state->next == state->limit)
                         return;
-                data = read_dev_sector(bdev, this_sector, &sect);
+                data = read_part_sector(state, this_sector, &sect);
                 if (!data)
                         return;
 
@@ -198,9 +197,8 @@ done:
 /* james@bpgc.com: Solaris has a nasty indicator: 0x82 which also
    indicates linux swap.  Be careful before believing this is Solaris. */
 
-static void
-parse_solaris_x86(struct parsed_partitions *state, struct block_device *bdev,
-                        sector_t offset, sector_t size, int origin)
+static void parse_solaris_x86(struct parsed_partitions *state,
+                              sector_t offset, sector_t size, int origin)
 {
 #ifdef CONFIG_SOLARIS_X86_PARTITION
         Sector sect;
@@ -208,7 +206,7 @@ parse_solaris_x86(struct parsed_partitions *state, struct block_device *bdev,
         int i;
         short max_nparts;
 
-        v = (struct solaris_x86_vtoc *)read_dev_sector(bdev, offset+1, &sect);
+        v = read_part_sector(state, offset + 1, &sect);
         if (!v)
                 return;
         if (le32_to_cpu(v->v_sanity) != SOLARIS_X86_VTOC_SANE) {
@@ -245,16 +243,15 @@ parse_solaris_x86(struct parsed_partitions *state, struct block_device *bdev,
  * Create devices for BSD partitions listed in a disklabel, under a
  * dos-like partition. See parse_extended() for more information.
  */
-static void
-parse_bsd(struct parsed_partitions *state, struct block_device *bdev,
-                sector_t offset, sector_t size, int origin, char *flavour,
-                int max_partitions)
+static void parse_bsd(struct parsed_partitions *state,
+                      sector_t offset, sector_t size, int origin, char *flavour,
+                      int max_partitions)
 {
         Sector sect;
         struct bsd_disklabel *l;
         struct bsd_partition *p;
 
-        l = (struct bsd_disklabel *)read_dev_sector(bdev, offset+1, &sect);
+        l = read_part_sector(state, offset + 1, &sect);
         if (!l)
                 return;
         if (le32_to_cpu(l->d_magic) != BSD_DISKMAGIC) {
@@ -291,33 +288,28 @@ parse_bsd(struct parsed_partitions *state, struct block_device *bdev,
 }
 #endif
 
-static void
-parse_freebsd(struct parsed_partitions *state, struct block_device *bdev,
-                sector_t offset, sector_t size, int origin)
+static void parse_freebsd(struct parsed_partitions *state,
+                          sector_t offset, sector_t size, int origin)
 {
 #ifdef CONFIG_BSD_DISKLABEL
-        parse_bsd(state, bdev, offset, size, origin,
-                        "bsd", BSD_MAXPARTITIONS);
+        parse_bsd(state, offset, size, origin, "bsd", BSD_MAXPARTITIONS);
 #endif
 }
 
-static void
-parse_netbsd(struct parsed_partitions *state, struct block_device *bdev,
-                sector_t offset, sector_t size, int origin)
+static void parse_netbsd(struct parsed_partitions *state,
+                         sector_t offset, sector_t size, int origin)
 {
 #ifdef CONFIG_BSD_DISKLABEL
-        parse_bsd(state, bdev, offset, size, origin,
-                        "netbsd", BSD_MAXPARTITIONS);
+        parse_bsd(state, offset, size, origin, "netbsd", BSD_MAXPARTITIONS);
 #endif
 }
 
-static void
-parse_openbsd(struct parsed_partitions *state, struct block_device *bdev,
-                sector_t offset, sector_t size, int origin)
+static void parse_openbsd(struct parsed_partitions *state,
+                          sector_t offset, sector_t size, int origin)
 {
 #ifdef CONFIG_BSD_DISKLABEL
-        parse_bsd(state, bdev, offset, size, origin,
-                        "openbsd", OPENBSD_MAXPARTITIONS);
+        parse_bsd(state, offset, size, origin, "openbsd",
+                  OPENBSD_MAXPARTITIONS);
 #endif
 }
 
@@ -325,16 +317,15 @@ parse_openbsd(struct parsed_partitions *state, struct block_device *bdev,
  * Create devices for Unixware partitions listed in a disklabel, under a
  * dos-like partition. See parse_extended() for more information.
  */
-static void
-parse_unixware(struct parsed_partitions *state, struct block_device *bdev,
-                sector_t offset, sector_t size, int origin)
+static void parse_unixware(struct parsed_partitions *state,
+                           sector_t offset, sector_t size, int origin)
 {
 #ifdef CONFIG_UNIXWARE_DISKLABEL
         Sector sect;
         struct unixware_disklabel *l;
         struct unixware_slice *p;
 
-        l = (struct unixware_disklabel *)read_dev_sector(bdev, offset+29, &sect);
+        l = read_part_sector(state, offset + 29, &sect);
         if (!l)
                 return;
         if (le32_to_cpu(l->d_magic) != UNIXWARE_DISKMAGIC ||
@@ -365,9 +356,8 @@ parse_unixware(struct parsed_partitions *state, struct block_device *bdev,
  * Anand Krishnamurthy <anandk@wiproge.med.ge.com>
  * Rajeev V. Pillai    <rajeevvp@yahoo.com>
  */
-static void
-parse_minix(struct parsed_partitions *state, struct block_device *bdev,
-                sector_t offset, sector_t size, int origin)
+static void parse_minix(struct parsed_partitions *state,
+                        sector_t offset, sector_t size, int origin)
 {
 #ifdef CONFIG_MINIX_SUBPARTITION
         Sector sect;
@@ -375,7 +365,7 @@ parse_minix(struct parsed_partitions *state, struct block_device *bdev,
         struct partition *p;
         int i;
 
-        data = read_dev_sector(bdev, offset, &sect);
+        data = read_part_sector(state, offset, &sect);
         if (!data)
                 return;
 
@@ -404,8 +394,7 @@ parse_minix(struct parsed_partitions *state, struct block_device *bdev,
 
 static struct {
         unsigned char id;
-        void (*parse)(struct parsed_partitions *, struct block_device *,
-                        sector_t, sector_t, int);
+        void (*parse)(struct parsed_partitions *, sector_t, sector_t, int);
 } subtypes[] = {
         {FREEBSD_PARTITION, parse_freebsd},
         {NETBSD_PARTITION, parse_netbsd},
@@ -417,16 +406,16 @@ static struct {
         {0, NULL},
 };
  
-int msdos_partition(struct parsed_partitions *state, struct block_device *bdev)
+int msdos_partition(struct parsed_partitions *state)
 {
-        sector_t sector_size = bdev_logical_block_size(bdev) / 512;
+        sector_t sector_size = bdev_logical_block_size(state->bdev) / 512;
         Sector sect;
         unsigned char *data;
         struct partition *p;
         struct fat_boot_sector *fb;
         int slot;
 
-        data = read_dev_sector(bdev, 0, &sect);
+        data = read_part_sector(state, 0, &sect);
         if (!data)
                 return -1;
         if (!msdos_magic_present(data + 510)) {
@@ -434,7 +423,7 @@ int msdos_partition(struct parsed_partitions *state, struct block_device *bdev)
                 return 0;
         }
 
-        if (aix_magic_present(data, bdev)) {
+        if (aix_magic_present(state, data)) {
                 put_dev_sector(sect);
                 printk( " [AIX]");
                 return 0;
@@ -503,7 +492,7 @@ int msdos_partition(struct parsed_partitions *state, struct block_device *bdev)
                         put_partition(state, slot, start, n);
 
                         printk(" <");
-                        parse_extended(state, bdev, start, size);
+                        parse_extended(state, start, size);
                         printk(" >");
                         continue;
                 }
@@ -532,8 +521,8 @@ int msdos_partition(struct parsed_partitions *state, struct block_device *bdev)
 
                 if (!subtypes[n].parse)
                         continue;
-                subtypes[n].parse(state, bdev, start_sect(p)*sector_size,
-                                                nr_sects(p)*sector_size, slot);
+                subtypes[n].parse(state, start_sect(p) * sector_size,
+                                  nr_sects(p) * sector_size, slot);
         }
         put_dev_sector(sect);
         return 1;
diff --git a/fs/partitions/msdos.h b/fs/partitions/msdos.h
index 01e5e0b6902d..38c781c490b3 100644
--- a/fs/partitions/msdos.h
+++ b/fs/partitions/msdos.h
@@ -4,5 +4,5 @@
 
 #define MSDOS_LABEL_MAGIC               0xAA55
 
-int msdos_partition(struct parsed_partitions *state, struct block_device *bdev);
+int msdos_partition(struct parsed_partitions *state);
 
diff --git a/fs/partitions/osf.c b/fs/partitions/osf.c
index c05c17bc5df3..fc22b85d436a 100644
--- a/fs/partitions/osf.c
+++ b/fs/partitions/osf.c
@@ -10,7 +10,7 @@
 #include "check.h"
 #include "osf.h"
 
-int osf_partition(struct parsed_partitions *state, struct block_device *bdev)
+int osf_partition(struct parsed_partitions *state)
 {
         int i;
         int slot = 1;
@@ -49,7 +49,7 @@ int osf_partition(struct parsed_partitions *state, struct block_device *bdev)
         } * label;
         struct d_partition * partition;
 
-        data = read_dev_sector(bdev, 0, &sect);
+        data = read_part_sector(state, 0, &sect);
         if (!data)
                 return -1;
 
diff --git a/fs/partitions/osf.h b/fs/partitions/osf.h
index 427b8eab314b..20ed2315ec16 100644
--- a/fs/partitions/osf.h
+++ b/fs/partitions/osf.h
@@ -4,4 +4,4 @@
 
 #define DISKLABELMAGIC (0x82564557UL)
 
-int osf_partition(struct parsed_partitions *state, struct block_device *bdev);
+int osf_partition(struct parsed_partitions *state);
diff --git a/fs/partitions/sgi.c b/fs/partitions/sgi.c
index ed5ac83fe83a..43b1df9aa16c 100644
--- a/fs/partitions/sgi.c
+++ b/fs/partitions/sgi.c
@@ -27,7 +27,7 @@ struct sgi_disklabel {
         __be32 _unused1;                        /* Padding */
 };
 
-int sgi_partition(struct parsed_partitions *state, struct block_device *bdev)
+int sgi_partition(struct parsed_partitions *state)
 {
         int i, csum;
         __be32 magic;
@@ -39,7 +39,7 @@ int sgi_partition(struct parsed_partitions *state, struct block_device *bdev)
         struct sgi_partition *p;
         char b[BDEVNAME_SIZE];
 
-        label = (struct sgi_disklabel *) read_dev_sector(bdev, 0, &sect);
+        label = read_part_sector(state, 0, &sect);
         if (!label)
                 return -1;
         p = &label->partitions[0];
@@ -57,7 +57,7 @@ int sgi_partition(struct parsed_partitions *state, struct block_device *bdev)
         }
         if(csum) {
                 printk(KERN_WARNING "Dev %s SGI disklabel: csum bad, label corrupted\n",
-                       bdevname(bdev, b));
+                       bdevname(state->bdev, b));
                 put_dev_sector(sect);
                 return 0;
         }
diff --git a/fs/partitions/sgi.h b/fs/partitions/sgi.h
index 5d5595c09928..b9553ebdd5a9 100644
--- a/fs/partitions/sgi.h
+++ b/fs/partitions/sgi.h
@@ -2,7 +2,7 @@
  *  fs/partitions/sgi.h
  */
 
-extern int sgi_partition(struct parsed_partitions *state, struct block_device *bdev);
+extern int sgi_partition(struct parsed_partitions *state);
 
 #define SGI_LABEL_MAGIC 0x0be5a941
 
diff --git a/fs/partitions/sun.c b/fs/partitions/sun.c
index c95e6a62c01d..a32660e25f7f 100644
--- a/fs/partitions/sun.c
+++ b/fs/partitions/sun.c
@@ -10,7 +10,7 @@
 #include "check.h"
 #include "sun.h"
 
-int sun_partition(struct parsed_partitions *state, struct block_device *bdev)
+int sun_partition(struct parsed_partitions *state)
 {
         int i;
         __be16 csum;
@@ -61,7 +61,7 @@ int sun_partition(struct parsed_partitions *state, struct block_device *bdev)
         int use_vtoc;
         int nparts;
 
-        label = (struct sun_disklabel *)read_dev_sector(bdev, 0, &sect);
+        label = read_part_sector(state, 0, &sect);
         if (!label)
                 return -1;
 
@@ -78,7 +78,7 @@ int sun_partition(struct parsed_partitions *state, struct block_device *bdev)
                 csum ^= *ush--;
         if (csum) {
                 printk("Dev %s Sun disklabel: Csum bad, label corrupted\n",
-                       bdevname(bdev, b));
+                       bdevname(state->bdev, b));
                 put_dev_sector(sect);
                 return 0;
         }
diff --git a/fs/partitions/sun.h b/fs/partitions/sun.h
index 7f864d1f86d4..2424baa8319f 100644
--- a/fs/partitions/sun.h
+++ b/fs/partitions/sun.h
@@ -5,4 +5,4 @@
 #define SUN_LABEL_MAGIC          0xDABE
 #define SUN_VTOC_SANITY          0x600DDEEE
 
-int sun_partition(struct parsed_partitions *state, struct block_device *bdev);
+int sun_partition(struct parsed_partitions *state);
diff --git a/fs/partitions/sysv68.c b/fs/partitions/sysv68.c
index 4eba27b78643..9030c864428e 100644
--- a/fs/partitions/sysv68.c
+++ b/fs/partitions/sysv68.c
@@ -46,7 +46,7 @@ struct slice {
 };
 
 
-int sysv68_partition(struct parsed_partitions *state, struct block_device *bdev)
+int sysv68_partition(struct parsed_partitions *state)
 {
         int i, slices;
         int slot = 1;
@@ -55,7 +55,7 @@ int sysv68_partition(struct parsed_partitions *state, struct block_device *bdev)
         struct dkblk0 *b;
         struct slice *slice;
 
-        data = read_dev_sector(bdev, 0, &sect);
+        data = read_part_sector(state, 0, &sect);
         if (!data)
                 return -1;
 
@@ -68,7 +68,7 @@ int sysv68_partition(struct parsed_partitions *state, struct block_device *bdev)
         i = be32_to_cpu(b->dk_ios.ios_slcblk);
         put_dev_sector(sect);
 
-        data = read_dev_sector(bdev, i, &sect);
+        data = read_part_sector(state, i, &sect);
         if (!data)
                 return -1;
 
diff --git a/fs/partitions/sysv68.h b/fs/partitions/sysv68.h
index fa733f68431b..bf2f5ffa97ac 100644
--- a/fs/partitions/sysv68.h
+++ b/fs/partitions/sysv68.h
@@ -1 +1 @@
-extern int sysv68_partition(struct parsed_partitions *state, struct block_device *bdev);
+extern int sysv68_partition(struct parsed_partitions *state);
diff --git a/fs/partitions/ultrix.c b/fs/partitions/ultrix.c
index ec852c11dce4..db9eef260364 100644
--- a/fs/partitions/ultrix.c
+++ b/fs/partitions/ultrix.c
@@ -9,7 +9,7 @@
 #include "check.h"
 #include "ultrix.h"
 
-int ultrix_partition(struct parsed_partitions *state, struct block_device *bdev)
+int ultrix_partition(struct parsed_partitions *state)
 {
         int i;
         Sector sect;
@@ -26,7 +26,7 @@ int ultrix_partition(struct parsed_partitions *state, struct block_device *bdev)
 #define PT_MAGIC        0x032957        /* Partition magic number */
 #define PT_VALID        1               /* Indicates if struct is valid */
 
-        data = read_dev_sector(bdev, (16384 - sizeof(*label))/512, &sect);
+        data = read_part_sector(state, (16384 - sizeof(*label))/512, &sect);
         if (!data)
                 return -1;
         
diff --git a/fs/partitions/ultrix.h b/fs/partitions/ultrix.h
index a74bf8e2d370..a3cc00b2bded 100644
--- a/fs/partitions/ultrix.h
+++ b/fs/partitions/ultrix.h
@@ -2,4 +2,4 @@
  *  fs/partitions/ultrix.h
  */
 
-int ultrix_partition(struct parsed_partitions *state, struct block_device *bdev);
+int ultrix_partition(struct parsed_partitions *state);