Messages in this thread Patch in this message | | | Date | Mon, 15 Apr 2019 19:59:34 -0700 | Subject | [PATCH] ext4: add cond_resched() to ext4_mb_init_backend() | From | Khazhismel Kumykov <> |
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on non-preempt kernels for filesystems with large number of groups we may take a long time (>50 ticks) initializing all the groups.
Signed-off-by: Khazhismel Kumykov <khazhy@google.com> --- fs/ext4/mballoc.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 8ef5f12bbee2..c89f497ccf50 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -2490,6 +2490,7 @@ static int ext4_mb_init_backend(struct super_block *sb) sbi->s_buddy_cache->i_ino = EXT4_BAD_INO; EXT4_I(sbi->s_buddy_cache)->i_disksize = 0; for (i = 0; i < ngroups; i++) { + cond_resched(); desc = ext4_get_group_desc(sb, i, NULL); if (desc == NULL) { ext4_msg(sb, KERN_ERR, "can't read descriptor %u", i); -- 2.21.0.392.gf8f6787159e-goog
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