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authorTheodore Ts'o <tytso@mit.edu>2009-06-09 09:54:40 -0400
committerTheodore Ts'o <tytso@mit.edu>2009-06-09 09:54:40 -0400
commit0eab928221bac8895a0b494a16a8810002bd8645 (patch)
tree733ca0ee831fffb3fd2c96b6715250e79e7a24fa /fs/ext4
parent9aee2286071c23c535fe9928eec1a26e0bcf256d (diff)
downloadlinux-0eab928221bac8895a0b494a16a8810002bd8645.tar.bz2
ext4: Don't treat a truncation of a zero-length file as replace-via-truncate
If a non-existent file is opened via O_WRONLY|O_CREAT|O_TRUNC, there's no need to treat this as a true file truncation, so we shouldn't activate the replace-via-truncate hueristic. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4')
-rw-r--r--fs/ext4/inode.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 2c10d346f7a3..875db944b22f 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4127,7 +4127,8 @@ void ext4_truncate(struct inode *inode)
if (!ext4_can_truncate(inode))
return;
- if (inode->i_size == 0 && !test_opt(inode->i_sb, NO_AUTO_DA_ALLOC))
+ if (ei->i_disksize && inode->i_size == 0 &&
+ !test_opt(inode->i_sb, NO_AUTO_DA_ALLOC))
ei->i_state |= EXT4_STATE_DA_ALLOC_CLOSE;
if (EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL) {