btrfs: Make get_extent_t take btrfs_inode

In addition to changing the signature, this patch also switches
all the functions which are used as an argument to also take btrfs_inode.
Namely those are: btrfs_get_extent and btrfs_get_extent_filemap.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

8 files changed, 59 insertions, 54 deletions

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 2e0845eafcbc..809736ec549b 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -3100,9 +3100,9 @@ struct btrfs_delalloc_work *btrfs_alloc_delalloc_work(struct inode *inode,
                                                     int delay_iput);
 void btrfs_wait_and_free_delalloc_work(struct btrfs_delalloc_work *work);
 
-struct extent_map *btrfs_get_extent_fiemap(struct inode *inode, struct page *page,
-                                           size_t pg_offset, u64 start, u64 len,
-                                           int create);
+struct extent_map *btrfs_get_extent_fiemap(struct btrfs_inode *inode,
+                struct page *page, size_t pg_offset, u64 start,
+                u64 len, int create);
 noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len,
                               u64 *orig_start, u64 *orig_block_len,
                               u64 *ram_bytes);
@@ -3166,9 +3166,9 @@ void btrfs_destroy_cachep(void);
 long btrfs_ioctl_trans_end(struct file *file);
 struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location,
                          struct btrfs_root *root, int *was_new);
-struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page,
-                                    size_t pg_offset, u64 start, u64 end,
-                                    int create);
+struct extent_map *btrfs_get_extent(struct btrfs_inode *inode,
+                struct page *page, size_t pg_offset,
+                u64 start, u64 end, int create);
 int btrfs_update_inode(struct btrfs_trans_handle *trans,
                               struct btrfs_root *root,
                               struct inode *inode);
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 2b06f557c176..a53ff3bff8eb 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -219,12 +219,12 @@ void btrfs_set_buffer_lockdep_class(u64 objectid, struct extent_buffer *eb,
  * extents on the btree inode are pretty simple, there's one extent
  * that covers the entire device
  */
-static struct extent_map *btree_get_extent(struct inode *inode,
+static struct extent_map *btree_get_extent(struct btrfs_inode *inode,
                 struct page *page, size_t pg_offset, u64 start, u64 len,
                 int create)
 {
-        struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
-        struct extent_map_tree *em_tree = &BTRFS_I(inode)->extent_tree;
+        struct btrfs_fs_info *fs_info = btrfs_sb(inode->vfs_inode.i_sb);
+        struct extent_map_tree *em_tree = &inode->extent_tree;
         struct extent_map *em;
         int ret;
 
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index d21082962565..c3abf846a449 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2860,7 +2860,7 @@ __get_extent_map(struct inode *inode, struct page *page, size_t pg_offset,
                 *em_cached = NULL;
         }
 
-        em = get_extent(inode, page, pg_offset, start, len, 0);
+        em = get_extent(BTRFS_I(inode), page, pg_offset, start, len, 0);
         if (em_cached && !IS_ERR_OR_NULL(em)) {
                 BUG_ON(*em_cached);
                 atomic_inc(&em->refs);
@@ -3373,7 +3373,7 @@ static noinline_for_stack int __extent_writepage_io(struct inode *inode,
                                                          page_end, NULL, 1);
                         break;
                 }
-                em = epd->get_extent(inode, page, pg_offset, cur,
+                em = epd->get_extent(BTRFS_I(inode), page, pg_offset, cur,
                                      end - cur + 1, 1);
                 if (IS_ERR_OR_NULL(em)) {
                         SetPageError(page);
@@ -4338,7 +4338,7 @@ static struct extent_map *get_extent_skip_holes(struct inode *inode,
                 if (len == 0)
                         break;
                 len = ALIGN(len, sectorsize);
-                em = get_extent(inode, NULL, 0, offset, len, 0);
+                em = get_extent(BTRFS_I(inode), NULL, 0, offset, len, 0);
                 if (IS_ERR_OR_NULL(em))
                         return em;
 
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index cd8b3dd6948d..c16260c6c14f 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -211,7 +211,7 @@ static inline int extent_compress_type(unsigned long bio_flags)
 
 struct extent_map_tree;
 
-typedef struct extent_map *(get_extent_t)(struct inode *inode,
+typedef struct extent_map *(get_extent_t)(struct btrfs_inode *inode,
                                           struct page *page,
                                           size_t pg_offset,
                                           u64 start, u64 len,
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index dff7ec1770c1..48dfb8e4baf2 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -2341,7 +2341,7 @@ static int find_first_non_hole(struct inode *inode, u64 *start, u64 *len)
         struct extent_map *em;
         int ret = 0;
 
-        em = btrfs_get_extent(inode, NULL, 0, *start, *len, 0);
+        em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, *start, *len, 0);
         if (IS_ERR_OR_NULL(em)) {
                 if (!em)
                         ret = -ENOMEM;
@@ -2833,7 +2833,7 @@ static long btrfs_fallocate(struct file *file, int mode,
         /* First, check if we exceed the qgroup limit */
         INIT_LIST_HEAD(&reserve_list);
         while (1) {
-                em = btrfs_get_extent(inode, NULL, 0, cur_offset,
+                em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, cur_offset,
                                       alloc_end - cur_offset, 0);
                 if (IS_ERR_OR_NULL(em)) {
                         if (!em)
@@ -2960,7 +2960,8 @@ static int find_desired_extent(struct inode *inode, loff_t *offset, int whence)
                          &cached_state);
 
         while (start < inode->i_size) {
-                em = btrfs_get_extent_fiemap(inode, NULL, 0, start, len, 0);
+                em = btrfs_get_extent_fiemap(BTRFS_I(inode), NULL, 0,
+                                start, len, 0);
                 if (IS_ERR(em)) {
                         ret = PTR_ERR(em);
                         em = NULL;
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 0600d55bb173..7e12c727f791 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -4852,7 +4852,7 @@ int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size)
 
         cur_offset = hole_start;
         while (1) {
-                em = btrfs_get_extent(inode, NULL, 0, cur_offset,
+                em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, cur_offset,
                                 block_end - cur_offset, 0);
                 if (IS_ERR(em)) {
                         err = PTR_ERR(em);
@@ -6732,25 +6732,26 @@ static noinline int uncompress_inline(struct btrfs_path *path,
  * This also copies inline extents directly into the page.
  */
 
-struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page,
-                                    size_t pg_offset, u64 start, u64 len,
-                                    int create)
+struct extent_map *btrfs_get_extent(struct btrfs_inode *inode,
+                struct page *page,
+            size_t pg_offset, u64 start, u64 len,
+                int create)
 {
-        struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
+        struct btrfs_fs_info *fs_info = btrfs_sb(inode->vfs_inode.i_sb);
         int ret;
         int err = 0;
         u64 extent_start = 0;
         u64 extent_end = 0;
-        u64 objectid = btrfs_ino(BTRFS_I(inode));
+        u64 objectid = btrfs_ino(inode);
         u32 found_type;
         struct btrfs_path *path = NULL;
-        struct btrfs_root *root = BTRFS_I(inode)->root;
+        struct btrfs_root *root = inode->root;
         struct btrfs_file_extent_item *item;
         struct extent_buffer *leaf;
         struct btrfs_key found_key;
         struct extent_map *em = NULL;
-        struct extent_map_tree *em_tree = &BTRFS_I(inode)->extent_tree;
-        struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree;
+        struct extent_map_tree *em_tree = &inode->extent_tree;
+        struct extent_io_tree *io_tree = &inode->io_tree;
         struct btrfs_trans_handle *trans = NULL;
         const bool new_inline = !page || create;
 
@@ -6863,7 +6864,7 @@ next:
                 goto not_found_em;
         }
 
-        btrfs_extent_item_to_extent_map(BTRFS_I(inode), path, item,
+        btrfs_extent_item_to_extent_map(inode, path, item,
                         new_inline, em);
 
         if (found_type == BTRFS_FILE_EXTENT_REG ||
@@ -7000,7 +7001,7 @@ insert:
         write_unlock(&em_tree->lock);
 out:
 
-        trace_btrfs_get_extent(root, BTRFS_I(inode), em);
+        trace_btrfs_get_extent(root, inode, em);
 
         btrfs_free_path(path);
         if (trans) {
@@ -7016,9 +7017,10 @@ out:
         return em;
 }
 
-struct extent_map *btrfs_get_extent_fiemap(struct inode *inode, struct page *page,
-                                           size_t pg_offset, u64 start, u64 len,
-                                           int create)
+struct extent_map *btrfs_get_extent_fiemap(struct btrfs_inode *inode,
+                struct page *page,
+                size_t pg_offset, u64 start, u64 len,
+                int create)
 {
         struct extent_map *em;
         struct extent_map *hole_em = NULL;
@@ -7055,7 +7057,7 @@ struct extent_map *btrfs_get_extent_fiemap(struct inode *inode, struct page *pag
         em = NULL;
 
         /* ok, we didn't find anything, lets look for delalloc */
-        found = count_range_bits(&BTRFS_I(inode)->io_tree, &range_start,
+        found = count_range_bits(&inode->io_tree, &range_start,
                                  end, len, EXTENT_DELALLOC, 1);
         found_end = range_start + found;
         if (found_end < range_start)
@@ -7625,7 +7627,7 @@ static int btrfs_get_blocks_direct(struct inode *inode, sector_t iblock,
                 goto err;
         }
 
-        em = btrfs_get_extent(inode, NULL, 0, start, len, 0);
+        em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, start, len, 0);
         if (IS_ERR(em)) {
                 ret = PTR_ERR(em);
                 goto unlock_err;
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 12ae210f8719..45a708555f9b 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -1009,7 +1009,7 @@ static struct extent_map *defrag_lookup_extent(struct inode *inode, u64 start)
 
                 /* get the big lock and read metadata off disk */
                 lock_extent_bits(io_tree, start, end, &cached);
-                em = btrfs_get_extent(inode, NULL, 0, start, len, 0);
+                em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, start, len, 0);
                 unlock_extent_cached(io_tree, start, end, &cached, GFP_NOFS);
 
                 if (IS_ERR(em))
diff --git a/fs/btrfs/tests/inode-tests.c b/fs/btrfs/tests/inode-tests.c
index 924bcbf43275..8c91d03cc82d 100644
--- a/fs/btrfs/tests/inode-tests.c
+++ b/fs/btrfs/tests/inode-tests.c
@@ -278,7 +278,7 @@ static noinline int test_btrfs_get_extent(u32 sectorsize, u32 nodesize)
 
         /* First with no extents */
         BTRFS_I(inode)->root = root;
-        em = btrfs_get_extent(inode, NULL, 0, 0, sectorsize, 0);
+        em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, 0, sectorsize, 0);
         if (IS_ERR(em)) {
                 em = NULL;
                 test_msg("Got an error when we shouldn't have\n");
@@ -302,7 +302,7 @@ static noinline int test_btrfs_get_extent(u32 sectorsize, u32 nodesize)
          */
         setup_file_extents(root, sectorsize);
 
-        em = btrfs_get_extent(inode, NULL, 0, 0, (u64)-1, 0);
+        em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, 0, (u64)-1, 0);
         if (IS_ERR(em)) {
                 test_msg("Got an error when we shouldn't have\n");
                 goto out;
@@ -323,7 +323,7 @@ static noinline int test_btrfs_get_extent(u32 sectorsize, u32 nodesize)
         offset = em->start + em->len;
         free_extent_map(em);
 
-        em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
+        em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
         if (IS_ERR(em)) {
                 test_msg("Got an error when we shouldn't have\n");
                 goto out;
@@ -350,7 +350,7 @@ static noinline int test_btrfs_get_extent(u32 sectorsize, u32 nodesize)
         offset = em->start + em->len;
         free_extent_map(em);
 
-        em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
+        em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
         if (IS_ERR(em)) {
                 test_msg("Got an error when we shouldn't have\n");
                 goto out;
@@ -372,7 +372,7 @@ static noinline int test_btrfs_get_extent(u32 sectorsize, u32 nodesize)
         free_extent_map(em);
 
         /* Regular extent */
-        em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
+        em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
         if (IS_ERR(em)) {
                 test_msg("Got an error when we shouldn't have\n");
                 goto out;
@@ -399,7 +399,7 @@ static noinline int test_btrfs_get_extent(u32 sectorsize, u32 nodesize)
         free_extent_map(em);
 
         /* The next 3 are split extents */
-        em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
+        em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
         if (IS_ERR(em)) {
                 test_msg("Got an error when we shouldn't have\n");
                 goto out;
@@ -428,7 +428,7 @@ static noinline int test_btrfs_get_extent(u32 sectorsize, u32 nodesize)
         offset = em->start + em->len;
         free_extent_map(em);
 
-        em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
+        em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
         if (IS_ERR(em)) {
                 test_msg("Got an error when we shouldn't have\n");
                 goto out;
@@ -450,7 +450,7 @@ static noinline int test_btrfs_get_extent(u32 sectorsize, u32 nodesize)
         offset = em->start + em->len;
         free_extent_map(em);
 
-        em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
+        em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
         if (IS_ERR(em)) {
                 test_msg("Got an error when we shouldn't have\n");
                 goto out;
@@ -484,7 +484,7 @@ static noinline int test_btrfs_get_extent(u32 sectorsize, u32 nodesize)
         free_extent_map(em);
 
         /* Prealloc extent */
-        em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
+        em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
         if (IS_ERR(em)) {
                 test_msg("Got an error when we shouldn't have\n");
                 goto out;
@@ -513,7 +513,7 @@ static noinline int test_btrfs_get_extent(u32 sectorsize, u32 nodesize)
         free_extent_map(em);
 
         /* The next 3 are a half written prealloc extent */
-        em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
+        em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
         if (IS_ERR(em)) {
                 test_msg("Got an error when we shouldn't have\n");
                 goto out;
@@ -543,7 +543,7 @@ static noinline int test_btrfs_get_extent(u32 sectorsize, u32 nodesize)
         offset = em->start + em->len;
         free_extent_map(em);
 
-        em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
+        em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
         if (IS_ERR(em)) {
                 test_msg("Got an error when we shouldn't have\n");
                 goto out;
@@ -576,7 +576,7 @@ static noinline int test_btrfs_get_extent(u32 sectorsize, u32 nodesize)
         offset = em->start + em->len;
         free_extent_map(em);
 
-        em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
+        em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
         if (IS_ERR(em)) {
                 test_msg("Got an error when we shouldn't have\n");
                 goto out;
@@ -611,7 +611,7 @@ static noinline int test_btrfs_get_extent(u32 sectorsize, u32 nodesize)
         free_extent_map(em);
 
         /* Now for the compressed extent */
-        em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
+        em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
         if (IS_ERR(em)) {
                 test_msg("Got an error when we shouldn't have\n");
                 goto out;
@@ -645,7 +645,7 @@ static noinline int test_btrfs_get_extent(u32 sectorsize, u32 nodesize)
         free_extent_map(em);
 
         /* Split compressed extent */
-        em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
+        em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
         if (IS_ERR(em)) {
                 test_msg("Got an error when we shouldn't have\n");
                 goto out;
@@ -680,7 +680,7 @@ static noinline int test_btrfs_get_extent(u32 sectorsize, u32 nodesize)
         offset = em->start + em->len;
         free_extent_map(em);
 
-        em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
+        em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
         if (IS_ERR(em)) {
                 test_msg("Got an error when we shouldn't have\n");
                 goto out;
@@ -707,7 +707,7 @@ static noinline int test_btrfs_get_extent(u32 sectorsize, u32 nodesize)
         offset = em->start + em->len;
         free_extent_map(em);
 
-        em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
+        em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
         if (IS_ERR(em)) {
                 test_msg("Got an error when we shouldn't have\n");
                 goto out;
@@ -742,7 +742,8 @@ static noinline int test_btrfs_get_extent(u32 sectorsize, u32 nodesize)
         free_extent_map(em);
 
         /* A hole between regular extents but no hole extent */
-        em = btrfs_get_extent(inode, NULL, 0, offset + 6, sectorsize, 0);
+        em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset + 6,
+                        sectorsize, 0);
         if (IS_ERR(em)) {
                 test_msg("Got an error when we shouldn't have\n");
                 goto out;
@@ -769,7 +770,7 @@ static noinline int test_btrfs_get_extent(u32 sectorsize, u32 nodesize)
         offset = em->start + em->len;
         free_extent_map(em);
 
-        em = btrfs_get_extent(inode, NULL, 0, offset, 4096 * 1024, 0);
+        em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, 4096 * 1024, 0);
         if (IS_ERR(em)) {
                 test_msg("Got an error when we shouldn't have\n");
                 goto out;
@@ -802,7 +803,7 @@ static noinline int test_btrfs_get_extent(u32 sectorsize, u32 nodesize)
         offset = em->start + em->len;
         free_extent_map(em);
 
-        em = btrfs_get_extent(inode, NULL, 0, offset, sectorsize, 0);
+        em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, offset, sectorsize, 0);
         if (IS_ERR(em)) {
                 test_msg("Got an error when we shouldn't have\n");
                 goto out;
@@ -885,7 +886,7 @@ static int test_hole_first(u32 sectorsize, u32 nodesize)
         insert_inode_item_key(root);
         insert_extent(root, sectorsize, sectorsize, sectorsize, 0, sectorsize,
                       sectorsize, BTRFS_FILE_EXTENT_REG, 0, 1);
-        em = btrfs_get_extent(inode, NULL, 0, 0, 2 * sectorsize, 0);
+        em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, 0, 2 * sectorsize, 0);
         if (IS_ERR(em)) {
                 test_msg("Got an error when we shouldn't have\n");
                 goto out;
@@ -907,7 +908,8 @@ static int test_hole_first(u32 sectorsize, u32 nodesize)
         }
         free_extent_map(em);
 
-        em = btrfs_get_extent(inode, NULL, 0, sectorsize, 2 * sectorsize, 0);
+        em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, sectorsize,
+                        2 * sectorsize, 0);
         if (IS_ERR(em)) {
                 test_msg("Got an error when we shouldn't have\n");
                 goto out;