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| author | Pan Dong <pandong.peter@bytedance.com> | 2021-05-25 10:36:56 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-14 17:53:03 +0300 |
| commit | 0bae1ea119819ce68749925b58b29af53a7a8e89 (patch) | |
| tree | 918b7152f85fd3eadeeab1e90d540b6e1197450e /fs/ext4 | |
| parent | 8c06b3d02d655ac0da0787a2f4ff902f3b4d657b (diff) | |
| download | linux-0bae1ea119819ce68749925b58b29af53a7a8e89.tar.xz | |
ext4: fix avefreec in find_group_orlov
commit c89849cc0259f3d33624cc3bd127685c3c0fa25d upstream.
The avefreec should be average free clusters instead
of average free blocks, otherwize Orlov's allocator
will not work properly when bigalloc enabled.
Cc: stable@kernel.org
Signed-off-by: Pan Dong <pandong.peter@bytedance.com>
Link: https://lore.kernel.org/r/20210525073656.31594-1-pandong.peter@bytedance.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/ext4')
| -rw-r--r-- | fs/ext4/ialloc.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c index dd2c23d1483c..83846cc81485 100644 --- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -394,7 +394,7 @@ static void get_orlov_stats(struct super_block *sb, ext4_group_t g, * * We always try to spread first-level directories. * - * If there are blockgroups with both free inodes and free blocks counts + * If there are blockgroups with both free inodes and free clusters counts * not worse than average we return one with smallest directory count. * Otherwise we simply return a random group. * @@ -403,7 +403,7 @@ static void get_orlov_stats(struct super_block *sb, ext4_group_t g, * It's OK to put directory into a group unless * it has too many directories already (max_dirs) or * it has too few free inodes left (min_inodes) or - * it has too few free blocks left (min_blocks) or + * it has too few free clusters left (min_clusters) or * Parent's group is preferred, if it doesn't satisfy these * conditions we search cyclically through the rest. If none * of the groups look good we just look for a group with more @@ -419,7 +419,7 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent, ext4_group_t real_ngroups = ext4_get_groups_count(sb); int inodes_per_group = EXT4_INODES_PER_GROUP(sb); unsigned int freei, avefreei, grp_free; - ext4_fsblk_t freeb, avefreec; + ext4_fsblk_t freec, avefreec; unsigned int ndirs; int max_dirs, min_inodes; ext4_grpblk_t min_clusters; @@ -438,9 +438,8 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent, freei = percpu_counter_read_positive(&sbi->s_freeinodes_counter); avefreei = freei / ngroups; - freeb = EXT4_C2B(sbi, - percpu_counter_read_positive(&sbi->s_freeclusters_counter)); - avefreec = freeb; + freec = percpu_counter_read_positive(&sbi->s_freeclusters_counter); + avefreec = freec; do_div(avefreec, ngroups); ndirs = percpu_counter_read_positive(&sbi->s_dirs_counter); |