ufs: Remove dead quota code

UFS quota is non-functional at least since 2.6.12 because dq_op was set
to NULL. Since the filesystem exists mainly to allow cooperation with Solaris
and quota format isn't standard, just remove the dead code.

CC: Evgeniy Dushistov <dushistov@mail.ru>
Signed-off-by: Jan Kara <jack@suse.cz>

7 files changed, 1 insertions, 195 deletions

diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c
index 5cfa4d85ccf..048484fb10d 100644
--- a/fs/ufs/balloc.c
+++ b/fs/ufs/balloc.c
@@ -12,7 +12,6 @@
 #include <linux/stat.h>
 #include <linux/time.h>
 #include <linux/string.h>
-#include <linux/quotaops.h>
 #include <linux/buffer_head.h>
 #include <linux/capability.h>
 #include <linux/bitops.h>
@@ -85,9 +84,6 @@ void ufs_free_fragments(struct inode *inode, u64 fragment, unsigned count)
                                    "bit already cleared for fragment %u", i);
         }
         
-        dquot_free_block(inode, count);
-
-        
         fs32_add(sb, &ucg->cg_cs.cs_nffree, count);
         uspi->cs_total.cs_nffree += count;
         fs32_add(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nffree, count);
@@ -195,7 +191,6 @@ do_more:
                 ubh_setblock(UCPI_UBH(ucpi), ucpi->c_freeoff, blkno);
                 if ((UFS_SB(sb)->s_flags & UFS_CG_MASK) == UFS_CG_44BSD)
                         ufs_clusteracct (sb, ucpi, blkno, 1);
-                dquot_free_block(inode, uspi->s_fpb);
 
                 fs32_add(sb, &ucg->cg_cs.cs_nbfree, 1);
                 uspi->cs_total.cs_nbfree++;
@@ -511,7 +506,6 @@ static u64 ufs_add_fragments(struct inode *inode, u64 fragment,
         struct ufs_cg_private_info * ucpi;
         struct ufs_cylinder_group * ucg;
         unsigned cgno, fragno, fragoff, count, fragsize, i;
-        int ret;
         
         UFSD("ENTER, fragment %llu, oldcount %u, newcount %u\n",
              (unsigned long long)fragment, oldcount, newcount);
@@ -557,11 +551,6 @@ static u64 ufs_add_fragments(struct inode *inode, u64 fragment,
                 fs32_add(sb, &ucg->cg_frsum[fragsize - count], 1);
         for (i = oldcount; i < newcount; i++)
                 ubh_clrbit (UCPI_UBH(ucpi), ucpi->c_freeoff, fragno + i);
-        ret = dquot_alloc_block(inode, count);
-        if (ret) {
-                *err = ret;
-                return 0;
-        }
 
         fs32_sub(sb, &ucg->cg_cs.cs_nffree, count);
         fs32_sub(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nffree, count);
@@ -598,7 +587,6 @@ static u64 ufs_alloc_fragments(struct inode *inode, unsigned cgno,
         struct ufs_cylinder_group * ucg;
         unsigned oldcg, i, j, k, allocsize;
         u64 result;
-        int ret;
         
         UFSD("ENTER, ino %lu, cgno %u, goal %llu, count %u\n",
              inode->i_ino, cgno, (unsigned long long)goal, count);
@@ -667,7 +655,6 @@ cg_found:
                 for (i = count; i < uspi->s_fpb; i++)
                         ubh_setbit (UCPI_UBH(ucpi), ucpi->c_freeoff, goal + i);
                 i = uspi->s_fpb - count;
-                dquot_free_block(inode, i);
 
                 fs32_add(sb, &ucg->cg_cs.cs_nffree, i);
                 uspi->cs_total.cs_nffree += i;
@@ -679,11 +666,6 @@ cg_found:
         result = ufs_bitmap_search (sb, ucpi, goal, allocsize);
         if (result == INVBLOCK)
                 return 0;
-        ret = dquot_alloc_block(inode, count);
-        if (ret) {
-                *err = ret;
-                return 0;
-        }
         for (i = 0; i < count; i++)
                 ubh_clrbit (UCPI_UBH(ucpi), ucpi->c_freeoff, result + i);
         
@@ -718,7 +700,6 @@ static u64 ufs_alloccg_block(struct inode *inode,
         struct ufs_super_block_first * usb1;
         struct ufs_cylinder_group * ucg;
         u64 result, blkno;
-        int ret;
 
         UFSD("ENTER, goal %llu\n", (unsigned long long)goal);
 
@@ -752,11 +733,6 @@ gotit:
         ubh_clrblock (UCPI_UBH(ucpi), ucpi->c_freeoff, blkno);
         if ((UFS_SB(sb)->s_flags & UFS_CG_MASK) == UFS_CG_44BSD)
                 ufs_clusteracct (sb, ucpi, blkno, -1);
-        ret = dquot_alloc_block(inode, uspi->s_fpb);
-        if (ret) {
-                *err = ret;
-                return INVBLOCK;
-        }
 
         fs32_sub(sb, &ucg->cg_cs.cs_nbfree, 1);
         uspi->cs_total.cs_nbfree--;
diff --git a/fs/ufs/file.c b/fs/ufs/file.c
index a8962cecde5..73655c61240 100644
--- a/fs/ufs/file.c
+++ b/fs/ufs/file.c
@@ -24,7 +24,6 @@
  */
 
 #include <linux/fs.h>
-#include <linux/quotaops.h>
 
 #include "ufs_fs.h"
 #include "ufs.h"
@@ -41,7 +40,7 @@ const struct file_operations ufs_file_operations = {
         .write          = do_sync_write,
         .aio_write      = generic_file_aio_write,
         .mmap           = generic_file_mmap,
-        .open           = dquot_file_open,
+        .open           = generic_file_open,
         .fsync          = simple_fsync,
         .splice_read    = generic_file_splice_read,
 };
diff --git a/fs/ufs/ialloc.c b/fs/ufs/ialloc.c
index 3a959d55084..594480e537d 100644
--- a/fs/ufs/ialloc.c
+++ b/fs/ufs/ialloc.c
@@ -27,7 +27,6 @@
 #include <linux/time.h>
 #include <linux/stat.h>
 #include <linux/string.h>
-#include <linux/quotaops.h>
 #include <linux/buffer_head.h>
 #include <linux/sched.h>
 #include <linux/bitops.h>
@@ -95,9 +94,6 @@ void ufs_free_inode (struct inode * inode)
 
         is_directory = S_ISDIR(inode->i_mode);
 
-        dquot_free_inode(inode);
-        dquot_drop(inode);
-
         clear_inode (inode);
 
         if (ubh_isclr (UCPI_UBH(ucpi), ucpi->c_iusedoff, bit))
@@ -347,21 +343,12 @@ cg_found:
 
         unlock_super (sb);
 
-        dquot_initialize(inode);
-        err = dquot_alloc_inode(inode);
-        if (err) {
-                dquot_drop(inode);
-                goto fail_without_unlock;
-        }
-
         UFSD("allocating inode %lu\n", inode->i_ino);
         UFSD("EXIT\n");
         return inode;
 
 fail_remove_inode:
         unlock_super(sb);
-fail_without_unlock:
-        inode->i_flags |= S_NOQUOTA;
         inode->i_nlink = 0;
         iput(inode);
         UFSD("EXIT (FAILED): err %d\n", err);
diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c
index cffa756f104..73fe773aa03 100644
--- a/fs/ufs/inode.c
+++ b/fs/ufs/inode.c
@@ -37,7 +37,6 @@
 #include <linux/smp_lock.h>
 #include <linux/buffer_head.h>
 #include <linux/writeback.h>
-#include <linux/quotaops.h>
 
 #include "ufs_fs.h"
 #include "ufs.h"
@@ -910,9 +909,6 @@ void ufs_delete_inode (struct inode * inode)
 {
         loff_t old_i_size;
 
-        if (!is_bad_inode(inode))
-                dquot_initialize(inode);
-
         truncate_inode_pages(&inode->i_data, 0);
         if (is_bad_inode(inode))
                 goto no_delete;
diff --git a/fs/ufs/namei.c b/fs/ufs/namei.c
index eabc02eb129..b056f02b1fb 100644
--- a/fs/ufs/namei.c
+++ b/fs/ufs/namei.c
@@ -30,7 +30,6 @@
 #include <linux/time.h>
 #include <linux/fs.h>
 #include <linux/smp_lock.h>
-#include <linux/quotaops.h>
 
 #include "ufs_fs.h"
 #include "ufs.h"
@@ -86,8 +85,6 @@ static int ufs_create (struct inode * dir, struct dentry * dentry, int mode,
 
         UFSD("BEGIN\n");
 
-        dquot_initialize(dir);
-
         inode = ufs_new_inode(dir, mode);
         err = PTR_ERR(inode);
 
@@ -112,8 +109,6 @@ static int ufs_mknod (struct inode * dir, struct dentry *dentry, int mode, dev_t
         if (!old_valid_dev(rdev))
                 return -EINVAL;
 
-        dquot_initialize(dir);
-
         inode = ufs_new_inode(dir, mode);
         err = PTR_ERR(inode);
         if (!IS_ERR(inode)) {
@@ -138,8 +133,6 @@ static int ufs_symlink (struct inode * dir, struct dentry * dentry,
         if (l > sb->s_blocksize)
                 goto out_notlocked;
 
-        dquot_initialize(dir);
-
         lock_kernel();
         inode = ufs_new_inode(dir, S_IFLNK | S_IRWXUGO);
         err = PTR_ERR(inode);
@@ -185,8 +178,6 @@ static int ufs_link (struct dentry * old_dentry, struct inode * dir,
                 return -EMLINK;
         }
 
-        dquot_initialize(dir);
-
         inode->i_ctime = CURRENT_TIME_SEC;
         inode_inc_link_count(inode);
         atomic_inc(&inode->i_count);
@@ -204,8 +195,6 @@ static int ufs_mkdir(struct inode * dir, struct dentry * dentry, int mode)
         if (dir->i_nlink >= UFS_LINK_MAX)
                 goto out;
 
-        dquot_initialize(dir);
-
         lock_kernel();
         inode_inc_link_count(dir);
 
@@ -250,8 +239,6 @@ static int ufs_unlink(struct inode *dir, struct dentry *dentry)
         struct page *page;
         int err = -ENOENT;
 
-        dquot_initialize(dir);
-
         de = ufs_find_entry(dir, &dentry->d_name, &page);
         if (!de)
                 goto out;
@@ -296,9 +283,6 @@ static int ufs_rename(struct inode *old_dir, struct dentry *old_dentry,
         struct ufs_dir_entry *old_de;
         int err = -ENOENT;
 
-        dquot_initialize(old_dir);
-        dquot_initialize(new_dir);
-
         old_de = ufs_find_entry(old_dir, &old_dentry->d_name, &old_page);
         if (!old_de)
                 goto out;
diff --git a/fs/ufs/super.c b/fs/ufs/super.c
index 2b08a8dd8ec..3c9bbf23c2f 100644
--- a/fs/ufs/super.c
+++ b/fs/ufs/super.c
@@ -77,7 +77,6 @@
 
 #include <linux/errno.h>
 #include <linux/fs.h>
-#include <linux/quotaops.h>
 #include <linux/slab.h>
 #include <linux/time.h>
 #include <linux/stat.h>
@@ -1045,10 +1044,6 @@ magic_found:
          */
         sb->s_op = &ufs_super_ops;
         sb->s_export_op = &ufs_export_ops;
-#ifdef CONFIG_QUOTA
-        sb->s_qcop = &dquot_quotactl_ops;
-        sb->dq_op = NULL; /* &dquot_operations */
-#endif
 
         sb->s_magic = fs32_to_cpu(sb, usb3->fs_magic);
 
@@ -1231,8 +1226,6 @@ static void ufs_put_super(struct super_block *sb)
                 
         UFSD("ENTER\n");
 
-        dquot_disable(sb, -1, DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED);
-
         if (sb->s_dirt)
                 ufs_write_super(sb);
 
@@ -1254,9 +1247,7 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
         struct ufs_super_block_first * usb1;
         struct ufs_super_block_third * usb3;
         unsigned new_mount_opt, ufstype;
-        int enable_quota = 0;
         unsigned flags;
-        int err;
 
         lock_kernel();
         lock_super(sb);
@@ -1297,13 +1288,6 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
          * fs was mouted as rw, remounting ro
          */
         if (*mount_flags & MS_RDONLY) {
-                err = dquot_suspend(sb, -1);
-                if (err < 0) {
-                        unlock_super(sb);
-                        unlock_kernel();
-                        return err;
-                }
-
                 ufs_put_super_internal(sb);
                 usb1->fs_time = cpu_to_fs32(sb, get_seconds());
                 if ((flags & UFS_ST_MASK) == UFS_ST_SUN
@@ -1342,14 +1326,11 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
                         return -EPERM;
                 }
                 sb->s_flags &= ~MS_RDONLY;
-                enable_quota = 1;
 #endif
         }
         UFS_SB(sb)->s_mount_opt = new_mount_opt;
         unlock_super(sb);
         unlock_kernel();
-        if (enable_quota)
-                dquot_resume(sb, -1);
         return 0;
 }
 
@@ -1453,126 +1434,19 @@ static void destroy_inodecache(void)
         kmem_cache_destroy(ufs_inode_cachep);
 }
 
-static void ufs_clear_inode(struct inode *inode)
-{
-        dquot_drop(inode);
-}
-
-#ifdef CONFIG_QUOTA
-static ssize_t ufs_quota_read(struct super_block *, int, char *,size_t, loff_t);
-static ssize_t ufs_quota_write(struct super_block *, int, const char *, size_t, loff_t);
-#endif
-
 static const struct super_operations ufs_super_ops = {
         .alloc_inode    = ufs_alloc_inode,
         .destroy_inode  = ufs_destroy_inode,
         .write_inode    = ufs_write_inode,
         .delete_inode   = ufs_delete_inode,
-        .clear_inode    = ufs_clear_inode,
         .put_super      = ufs_put_super,
         .write_super    = ufs_write_super,
         .sync_fs        = ufs_sync_fs,
         .statfs         = ufs_statfs,
         .remount_fs     = ufs_remount,
         .show_options   = ufs_show_options,
-#ifdef CONFIG_QUOTA
-        .quota_read     = ufs_quota_read,
-        .quota_write    = ufs_quota_write,
-#endif
 };
 
-#ifdef CONFIG_QUOTA
-
-/* Read data from quotafile - avoid pagecache and such because we cannot afford
- * acquiring the locks... As quota files are never truncated and quota code
- * itself serializes the operations (and noone else should touch the files)
- * we don't have to be afraid of races */
-static ssize_t ufs_quota_read(struct super_block *sb, int type, char *data,
-                               size_t len, loff_t off)
-{
-        struct inode *inode = sb_dqopt(sb)->files[type];
-        sector_t blk = off >> sb->s_blocksize_bits;
-        int err = 0;
-        int offset = off & (sb->s_blocksize - 1);
-        int tocopy;
-        size_t toread;
-        struct buffer_head *bh;
-        loff_t i_size = i_size_read(inode);
-
-        if (off > i_size)
-                return 0;
-        if (off+len > i_size)
-                len = i_size-off;
-        toread = len;
-        while (toread > 0) {
-                tocopy = sb->s_blocksize - offset < toread ?
-                                sb->s_blocksize - offset : toread;
-
-                bh = ufs_bread(inode, blk, 0, &err);
-                if (err)
-                        return err;
-                if (!bh)        /* A hole? */
-                        memset(data, 0, tocopy);
-                else {
-                        memcpy(data, bh->b_data+offset, tocopy);
-                        brelse(bh);
-                }
-                offset = 0;
-                toread -= tocopy;
-                data += tocopy;
-                blk++;
-        }
-        return len;
-}
-
-/* Write to quotafile */
-static ssize_t ufs_quota_write(struct super_block *sb, int type,
-                                const char *data, size_t len, loff_t off)
-{
-        struct inode *inode = sb_dqopt(sb)->files[type];
-        sector_t blk = off >> sb->s_blocksize_bits;
-        int err = 0;
-        int offset = off & (sb->s_blocksize - 1);
-        int tocopy;
-        size_t towrite = len;
-        struct buffer_head *bh;
-
-        mutex_lock_nested(&inode->i_mutex, I_MUTEX_QUOTA);
-        while (towrite > 0) {
-                tocopy = sb->s_blocksize - offset < towrite ?
-                                sb->s_blocksize - offset : towrite;
-
-                bh = ufs_bread(inode, blk, 1, &err);
-                if (!bh)
-                        goto out;
-                lock_buffer(bh);
-                memcpy(bh->b_data+offset, data, tocopy);
-                flush_dcache_page(bh->b_page);
-                set_buffer_uptodate(bh);
-                mark_buffer_dirty(bh);
-                unlock_buffer(bh);
-                brelse(bh);
-                offset = 0;
-                towrite -= tocopy;
-                data += tocopy;
-                blk++;
-        }
-out:
-        if (len == towrite) {
-                mutex_unlock(&inode->i_mutex);
-                return err;
-        }
-        if (inode->i_size < off+len-towrite)
-                i_size_write(inode, off+len-towrite);
-        inode->i_version++;
-        inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
-        mark_inode_dirty(inode);
-        mutex_unlock(&inode->i_mutex);
-        return len - towrite;
-}
-
-#endif
-
 static int ufs_get_sb(struct file_system_type *fs_type,
         int flags, const char *dev_name, void *data, struct vfsmount *mnt)
 {
diff --git a/fs/ufs/truncate.c b/fs/ufs/truncate.c
index f294c44577d..4171e2df18d 100644
--- a/fs/ufs/truncate.c
+++ b/fs/ufs/truncate.c
@@ -44,7 +44,6 @@
 #include <linux/buffer_head.h>
 #include <linux/blkdev.h>
 #include <linux/sched.h>
-#include <linux/quotaops.h>
 
 #include "ufs_fs.h"
 #include "ufs.h"
@@ -518,15 +517,6 @@ int ufs_setattr(struct dentry *dentry, struct iattr *attr)
         if (error)
                 return error;
 
-        if (is_quota_modification(inode, attr))
-                dquot_initialize(inode);
-
-        if ((ia_valid & ATTR_UID && attr->ia_uid != inode->i_uid) ||
-            (ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid)) {
-                error = dquot_transfer(inode, attr);
-                if (error)
-                        return error;
-        }
         if (ia_valid & ATTR_SIZE && attr->ia_size != inode->i_size) {
                 loff_t old_i_size = inode->i_size;