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authorEvgeniy Dushistov <dushistov@mail.ru>2006-07-01 04:36:24 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-07-01 09:56:03 -0700
commit10e5dce07e6f8f9cea1b54161a888bb099484f88 (patch)
tree9c7949cf82763344d86ae302748f8e1d278b565a /fs/ufs/inode.c
parenteb28931e4a2c89e53d2b0c1a02a843240bff0806 (diff)
[PATCH] ufs: truncate should allocate block for last byte
This patch fixes buggy behaviour of UFS in such kind of scenario: open(, O_TRUNC...) ftruncate(, 1024) ftruncate(, 0) Such a scenario causes ufs_panic and remount read-only. This happen because of according to specification UFS should always allocate block for last byte, and many parts of our implementation rely on this, but `ufs_truncate' doesn't care about this. To make possible return error code and to know about old size, this patch removes `truncate' from ufs inode_operations and uses `setattr' method to call ufs_truncate. Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/ufs/inode.c')
-rw-r--r--fs/ufs/inode.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c
index 488b5ff48af..e7c8615beb6 100644
--- a/fs/ufs/inode.c
+++ b/fs/ufs/inode.c
@@ -843,14 +843,17 @@ int ufs_sync_inode (struct inode *inode)
void ufs_delete_inode (struct inode * inode)
{
+ loff_t old_i_size;
+
truncate_inode_pages(&inode->i_data, 0);
/*UFS_I(inode)->i_dtime = CURRENT_TIME;*/
lock_kernel();
mark_inode_dirty(inode);
ufs_update_inode(inode, IS_SYNC(inode));
+ old_i_size = inode->i_size;
inode->i_size = 0;
- if (inode->i_blocks)
- ufs_truncate (inode);
+ if (inode->i_blocks && ufs_truncate(inode, old_i_size))
+ ufs_warning(inode->i_sb, __FUNCTION__, "ufs_truncate failed\n");
ufs_free_inode (inode);
unlock_kernel();
}