diff options
| author | Theodore Ts'o <tytso@mit.edu> | 2009-09-28 00:06:20 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-12-14 08:06:53 -0800 |
| commit | 0be3bd025b9893a0f2ed3d1cbeb06d7abc0e27df (patch) | |
| tree | 897e6c410e9488acce72ed4f5630ac79786a3a42 /fs | |
| parent | a6c92a88b556da1073e03d6936ae70c2c045421c (diff) | |
ext4: Fix hueristic which avoids group preallocation for closed files
(cherry picked from commit 71780577306fd1e76c7a92e3b308db624d03adb9)
The hueristic was designed to avoid using locality group preallocation
when writing the last segment of a closed file. Fix it by move
setting size to the maximum of size and isize until after we check
whether size == isize.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ext4/mballoc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 32f5d7dec465..1379587234d3 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -4162,7 +4162,6 @@ static void ext4_mb_group_or_file(struct ext4_allocation_context *ac) size = ac->ac_o_ex.fe_logical + ac->ac_o_ex.fe_len; isize = (i_size_read(ac->ac_inode) + ac->ac_sb->s_blocksize - 1) >> bsbits; - size = max(size, isize); if ((size == isize) && !ext4_fs_is_busy(sbi) && @@ -4172,6 +4171,7 @@ static void ext4_mb_group_or_file(struct ext4_allocation_context *ac) } /* don't use group allocation for large files */ + size = max(size, isize); if (size >= sbi->s_mb_stream_request) { ac->ac_flags |= EXT4_MB_STREAM_ALLOC; return; |