There is no good reason for the s_last_trim_minblks to be atomic. There is
no data integrity needed and there is no real danger in setting and
reading it in a racy manner. Change it to be unsigned long, the same type
as s_clusters_per_group which is the maximum that's allowed.
Signed-off-by: Lukas Czerner <lczerner@xxxxxxxxxx>
Suggested-by: Andreas Dilger <adilger@xxxxxxxxx>
---
fs/ext4/ext4.h | 2 +-
fs/ext4/mballoc.c | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 3825195539d7..92a155401f61 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1660,7 +1660,7 @@ struct ext4_sb_info {
struct task_struct *s_mmp_tsk;
/* record the last minlen when FITRIM is called. */
- atomic_t s_last_trim_minblks;
+ unsigned long s_last_trim_minblks;
/* Reference to checksum algorithm driver via cryptoapi */
struct crypto_shash *s_chksum_driver;
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 72bfac2d6dce..eda550ec3956 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -6374,7 +6374,7 @@ ext4_trim_all_free(struct super_block *sb, ext4_group_t group,
ext4_lock_group(sb, group);
if (!EXT4_MB_GRP_WAS_TRIMMED(e4b.bd_info) ||
- minblocks < atomic_read(&EXT4_SB(sb)->s_last_trim_minblks)) {
+ minblocks < EXT4_SB(sb)->s_last_trim_minblks) {
ret = ext4_try_to_trim_range(sb, &e4b, start, max, minblocks);
if (ret >= 0)
EXT4_MB_GRP_SET_TRIMMED(e4b.bd_info);
@@ -6475,7 +6475,7 @@ int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range)
}
if (!ret)
- atomic_set(&EXT4_SB(sb)->s_last_trim_minblks, minlen);
+ EXT4_SB(sb)->s_last_trim_minblks = minlen;
out:
range->len = EXT4_C2B(EXT4_SB(sb), trimmed) << sb->s_blocksize_bits;
--
2.31.1
