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author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-10 18:26:52 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-10 18:26:52 (GMT) |
commit | 5f248c9c251c60af3403902b26e08de43964ea0b (patch) | |
tree | 6d3328e72a7e4015a64017eb30be18095c6a3c64 /fs/ubifs | |
parent | f6cec0ae58c17522a7bc4e2f39dae19f199ab534 (diff) | |
parent | dca332528bc69e05f67161e1ed59929633d5e63d (diff) | |
download | linux-fsl-qoriq-5f248c9c251c60af3403902b26e08de43964ea0b.tar.xz |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (96 commits)
no need for list_for_each_entry_safe()/resetting with superblock list
Fix sget() race with failing mount
vfs: don't hold s_umount over close_bdev_exclusive() call
sysv: do not mark superblock dirty on remount
sysv: do not mark superblock dirty on mount
btrfs: remove junk sb_dirt change
BFS: clean up the superblock usage
AFFS: wait for sb synchronization when needed
AFFS: clean up dirty flag usage
cifs: truncate fallout
mbcache: fix shrinker function return value
mbcache: Remove unused features
add f_flags to struct statfs(64)
pass a struct path to vfs_statfs
update VFS documentation for method changes.
All filesystems that need invalidate_inode_buffers() are doing that explicitly
convert remaining ->clear_inode() to ->evict_inode()
Make ->drop_inode() just return whether inode needs to be dropped
fs/inode.c:clear_inode() is gone
fs/inode.c:evict() doesn't care about delete vs. non-delete paths now
...
Fix up trivial conflicts in fs/nilfs2/super.c
Diffstat (limited to 'fs/ubifs')
-rw-r--r-- | fs/ubifs/file.c | 23 | ||||
-rw-r--r-- | fs/ubifs/super.c | 12 | ||||
-rw-r--r-- | fs/ubifs/ubifs.h | 2 |
3 files changed, 17 insertions, 20 deletions
diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c index 12f445c..03ae894 100644 --- a/fs/ubifs/file.c +++ b/fs/ubifs/file.c @@ -967,14 +967,15 @@ static int do_writepage(struct page *page, int len) * the page locked, and it locks @ui_mutex. However, write-back does take inode * @i_mutex, which means other VFS operations may be run on this inode at the * same time. And the problematic one is truncation to smaller size, from where - * we have to call 'simple_setsize()', which first changes @inode->i_size, then + * we have to call 'truncate_setsize()', which first changes @inode->i_size, then * drops the truncated pages. And while dropping the pages, it takes the page - * lock. This means that 'do_truncation()' cannot call 'simple_setsize()' with + * lock. This means that 'do_truncation()' cannot call 'truncate_setsize()' with * @ui_mutex locked, because it would deadlock with 'ubifs_writepage()'. This * means that @inode->i_size is changed while @ui_mutex is unlocked. * - * XXX: with the new truncate the above is not true anymore, the simple_setsize - * calls can be replaced with the individual components. + * XXX(truncate): with the new truncate sequence this is not true anymore, + * and the calls to truncate_setsize can be move around freely. They should + * be moved to the very end of the truncate sequence. * * But in 'ubifs_writepage()' we have to guarantee that we do not write beyond * inode size. How do we do this if @inode->i_size may became smaller while we @@ -1128,9 +1129,7 @@ static int do_truncation(struct ubifs_info *c, struct inode *inode, budgeted = 0; } - err = simple_setsize(inode, new_size); - if (err) - goto out_budg; + truncate_setsize(inode, new_size); if (offset) { pgoff_t index = new_size >> PAGE_CACHE_SHIFT; @@ -1217,16 +1216,14 @@ static int do_setattr(struct ubifs_info *c, struct inode *inode, if (attr->ia_valid & ATTR_SIZE) { dbg_gen("size %lld -> %lld", inode->i_size, new_size); - err = simple_setsize(inode, new_size); - if (err) - goto out; + truncate_setsize(inode, new_size); } mutex_lock(&ui->ui_mutex); if (attr->ia_valid & ATTR_SIZE) { /* Truncation changes inode [mc]time */ inode->i_mtime = inode->i_ctime = ubifs_current_time(inode); - /* 'simple_setsize()' changed @i_size, update @ui_size */ + /* 'truncate_setsize()' changed @i_size, update @ui_size */ ui->ui_size = inode->i_size; } @@ -1248,10 +1245,6 @@ static int do_setattr(struct ubifs_info *c, struct inode *inode, if (IS_SYNC(inode)) err = inode->i_sb->s_op->write_inode(inode, NULL); return err; - -out: - ubifs_release_budget(c, &req); - return err; } int ubifs_setattr(struct dentry *dentry, struct iattr *attr) diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c index 5fc5a09..cd5900b 100644 --- a/fs/ubifs/super.c +++ b/fs/ubifs/super.c @@ -327,7 +327,7 @@ static int ubifs_write_inode(struct inode *inode, struct writeback_control *wbc) return err; } -static void ubifs_delete_inode(struct inode *inode) +static void ubifs_evict_inode(struct inode *inode) { int err; struct ubifs_info *c = inode->i_sb->s_fs_info; @@ -343,9 +343,12 @@ static void ubifs_delete_inode(struct inode *inode) dbg_gen("inode %lu, mode %#x", inode->i_ino, (int)inode->i_mode); ubifs_assert(!atomic_read(&inode->i_count)); - ubifs_assert(inode->i_nlink == 0); truncate_inode_pages(&inode->i_data, 0); + + if (inode->i_nlink) + goto done; + if (is_bad_inode(inode)) goto out; @@ -367,7 +370,8 @@ out: c->nospace = c->nospace_rp = 0; smp_wmb(); } - clear_inode(inode); +done: + end_writeback(inode); } static void ubifs_dirty_inode(struct inode *inode) @@ -1826,7 +1830,7 @@ const struct super_operations ubifs_super_operations = { .destroy_inode = ubifs_destroy_inode, .put_super = ubifs_put_super, .write_inode = ubifs_write_inode, - .delete_inode = ubifs_delete_inode, + .evict_inode = ubifs_evict_inode, .statfs = ubifs_statfs, .dirty_inode = ubifs_dirty_inode, .remount_fs = ubifs_remount_fs, diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index 0431087..0c9876b 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -379,7 +379,7 @@ struct ubifs_gced_idx_leb { * The @ui_size is a "shadow" variable for @inode->i_size and UBIFS uses * @ui_size instead of @inode->i_size. The reason for this is that UBIFS cannot * make sure @inode->i_size is always changed under @ui_mutex, because it - * cannot call 'simple_setsize()' with @ui_mutex locked, because it would deadlock + * cannot call 'truncate_setsize()' with @ui_mutex locked, because it would deadlock * with 'ubifs_writepage()' (see file.c). All the other inode fields are * changed under @ui_mutex, so they do not need "shadow" fields. Note, one * could consider to rework locking and base it on "shadow" fields. |