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author | Jiri Kosina <jkosina@suse.cz> | 2010-08-11 09:36:51 +0200 |
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committer | Jiri Kosina <jkosina@suse.cz> | 2010-08-11 09:36:51 +0200 |
commit | 6396fc3b3ff3f6b942992b653a62df11dcef9bea (patch) | |
tree | db3c7cbe833b43c653adc99f70941431c5ff7c4e /fs/ubifs/file.c | |
parent | 4785879e4d340e24e54f6de2ccfc42728b912808 (diff) | |
parent | 3d30701b58970425e1d45994d6cb82f828924fdd (diff) | |
download | kernel_replicant_linux-6396fc3b3ff3f6b942992b653a62df11dcef9bea.tar.gz kernel_replicant_linux-6396fc3b3ff3f6b942992b653a62df11dcef9bea.tar.bz2 kernel_replicant_linux-6396fc3b3ff3f6b942992b653a62df11dcef9bea.zip |
Merge branch 'master' into for-next
Conflicts:
fs/exofs/inode.c
Diffstat (limited to 'fs/ubifs/file.c')
-rw-r--r-- | fs/ubifs/file.c | 23 |
1 files changed, 8 insertions, 15 deletions
diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c index 12f445cee9f7..03ae894c45de 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) |