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authorLukas Czerner <lczerner@redhat.com>2012-09-26 22:21:21 -0400
committerTheodore Ts'o <tytso@mit.edu>2012-09-26 22:21:21 -0400
commitaaf7d73e54b6915310ece11aedb19ec06a833642 (patch)
treef34ceab694382ab812423f6774e30ef4889cc400 /fs/ext4/mballoc.c
parentb71fc079b5d8f42b2a52743c8d2f1d35d655b1c5 (diff)
ext4: enable FITRIM ioctl on bigalloc file system
With a minor tweaks regarding minimum extent size to discard and discarded bytes reporting the FITRIM can be enabled on bigalloc file system and it works without any problem. This patch fixes minlen handling and discarded bytes reporting to take into consideration bigalloc enabled file systems and finally removes the restriction and allow FITRIM to be used on file system with bigalloc feature enabled. Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com> Signed-off-by: Lukas Czerner <lczerner@redhat.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/mballoc.c')
-rw-r--r--fs/ext4/mballoc.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 8ec6f88b7a3..a415465f97a 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -4990,7 +4990,8 @@ int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range)
start = range->start >> sb->s_blocksize_bits;
end = start + (range->len >> sb->s_blocksize_bits) - 1;
- minlen = range->minlen >> sb->s_blocksize_bits;
+ minlen = EXT4_NUM_B2C(EXT4_SB(sb),
+ range->minlen >> sb->s_blocksize_bits);
if (unlikely(minlen > EXT4_CLUSTERS_PER_GROUP(sb)) ||
unlikely(start >= max_blks))
@@ -5050,6 +5051,6 @@ int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range)
atomic_set(&EXT4_SB(sb)->s_last_trim_minblks, minlen);
out:
- range->len = trimmed * sb->s_blocksize;
+ range->len = EXT4_C2B(EXT4_SB(sb), trimmed) << sb->s_blocksize_bits;
return ret;
}