diff options
| author | Josh Triplett | 2022-07-31 20:24:53 -0700 |
|---|---|---|
| committer | Theodore Ts'o | 2022-09-29 10:38:57 -0400 |
| commit | 426d15ad11419066f7042ffa8fbf1b5c21a1ecbe (patch) | |
| tree | 6bdccb56012dd80329bd0dabe76ff12994ad3463 /fs | |
| parent | 2d544ec923dbe5fbed64a7f43dccf527218380bc (diff) | |
ext4: don't run ext4lazyinit for read-only filesystems
On a read-only filesystem, we won't invoke the block allocator, so we
don't need to prefetch the block bitmaps.
This avoids starting and running the ext4lazyinit thread at all on a
system with no read-write ext4 filesystems (for instance, a container VM
with read-only filesystems underneath an overlayfs).
Fixes: 21175ca434c5 ("ext4: make prefetch_block_bitmaps default")
Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Reviewed-by: Lukas Czerner <lczerner@redhat.com>
Link: https://lore.kernel.org/r/48b41da1498fcac3287e2e06b660680646c1c050.1659323972.git.josh@joshtriplett.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ext4/super.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 23329d7c9d55..afbbf07f58a7 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -3973,9 +3973,9 @@ int ext4_register_li_request(struct super_block *sb, goto out; } - if (test_opt(sb, NO_PREFETCH_BLOCK_BITMAPS) && - (first_not_zeroed == ngroups || sb_rdonly(sb) || - !test_opt(sb, INIT_INODE_TABLE))) + if (sb_rdonly(sb) || + (test_opt(sb, NO_PREFETCH_BLOCK_BITMAPS) && + (first_not_zeroed == ngroups || !test_opt(sb, INIT_INODE_TABLE)))) goto out; elr = ext4_li_request_new(sb, first_not_zeroed); |