For some reason, when we set mount option init_itable=0 it behaves as
we would set init_itable=20 which is not right at all. Basically when we
set it to zero we are saying to lazyinit thread not to wait between
zeroing the inode table (except of cond_resched()) so this commit fixes
that and removes the unnecessary condition. The 'n' should be also
properly used on remount.
When the n is not set at all, it means that the default miltiplier
EXT4_DEF_LI_WAIT_MULT is set instead.
Signed-off-by: Lukas Czerner <lczerner@xxxxxxxxxx>
Reported-by: Eric Sandeen <sandeen@xxxxxxxxxx>
---
fs/ext4/super.c | 21 +++++++++++++++------
1 files changed, 15 insertions(+), 6 deletions(-)
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 6ccf0e2..c379af6 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -2690,11 +2690,8 @@ static int ext4_run_li_request(struct ext4_li_request *elr)
ret = ext4_init_inode_table(sb, group,
elr->lr_timeout ? 0 : 1);
if (elr->lr_timeout == 0) {
- timeout = jiffies - timeout;
- if (elr->lr_sbi->s_li_wait_mult)
- timeout *= elr->lr_sbi->s_li_wait_mult;
- else
- timeout *= 20;
+ timeout = (jiffies - timeout) *
+ elr->lr_sbi->s_li_wait_mult;
elr->lr_timeout = timeout;
}
elr->lr_next_sched = jiffies + elr->lr_timeout;
@@ -2931,8 +2928,14 @@ static int ext4_register_li_request(struct super_block *sb,
ext4_group_t ngroups = EXT4_SB(sb)->s_groups_count;
int ret = 0;
- if (sbi->s_li_request != NULL)
+ if (sbi->s_li_request != NULL) {
+ /*
+ * Reset timeout so it can be computed again, because
+ * s_li_wait_mult might have changed.
+ */
+ sbi->s_li_request->lr_timeout = 0;
return 0;
+ }
if (first_not_zeroed == ngroups ||
(sb->s_flags & MS_RDONLY) ||
@@ -3137,6 +3140,12 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
((def_mount_opts & EXT4_DEFM_NODELALLOC) == 0))
set_opt(sb, DELALLOC);
+ /*
+ * set default s_li_wait_mult for lazyinit, for the case there is
+ * no mount option specified.
+ */
+ sbi->s_li_wait_mult = EXT4_DEF_LI_WAIT_MULT;
+
if (!parse_options((char *) sbi->s_es->s_mount_opts, sb,
&journal_devnum, &journal_ioprio, NULL, 0)) {
ext4_msg(sb, KERN_WARNING,
--
1.7.4.4
--
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