openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

ext4: print quota journalling mode on (re-)mount 

Right now, it is hard to understand which quota journalling type is enabled:
you need to be quite familiar with kernel code and trace it or really
understand what different combinations of fs flags/mount options lead to.

This patch adds printing of current quota jounalling mode on each
mount/remount, thus making it easier to check it at a glance/in autotests.
The semantics is similar to ext4 data journalling modes:

* journalled - quota configured, journalling will be enabled
* writeback  - quota configured, journalling won't be enabled
* none       - quota isn't configured
* disabled   - kernel compiled without CONFIG_QUOTA feature

Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/1603336860-16153-2-git-send-email-dotdot@yandex-team.ru
Signed-off-by: Roman Anufriev <dotdot@yandex-team.ru>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Roman Anufriev 2020-10-22 06:21:00 +03:00 committed by Theodore Ts'o
parent f177ee0882
commit ca9b404ff1
1 changed files with 20 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
fs/ext4/super.c
View File

@ -4005,6 +4005,21 @@ static void ext4_set_resv_clusters(struct super_block *sb)
atomic64_set(&sbi->s_resv_clusters, resv_clusters);
}
static const char *ext4_quota_mode(struct super_block *sb)
{
#ifdef CONFIG_QUOTA
if (!ext4_quota_capable(sb))
return "none";
if (EXT4_SB(sb)->s_journal && ext4_is_quota_journalled(sb))
return "journalled";
else
return "writeback";
#else
return "disabled";
#endif
}
static int ext4_fill_super(struct super_block *sb, void *data, int silent)
{
struct dax_device *dax_dev = fs_dax_get_by_bdev(sb->s_bdev);
@ -5090,10 +5105,11 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
if (___ratelimit(&ext4_mount_msg_ratelimit, "EXT4-fs mount"))
ext4_msg(sb, KERN_INFO, "mounted filesystem with%s. "
"Opts: %.*s%s%s", descr,
"Opts: %.*s%s%s. Quota mode: %s.", descr,
(int) sizeof(sbi->s_es->s_mount_opts),
sbi->s_es->s_mount_opts,
*sbi->s_es->s_mount_opts ? "; " : "", orig_data);
*sbi->s_es->s_mount_opts ? "; " : "", orig_data,
ext4_quota_mode(sb));
if (es->s_error_count)
mod_timer(&sbi->s_err_report, jiffies + 300*HZ); /* 5 minutes */
@ -6031,7 +6047,8 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
*/
*flags = (*flags & ~vfs_flags) | (sb->s_flags & vfs_flags);
ext4_msg(sb, KERN_INFO, "re-mounted. Opts: %s", orig_data);
ext4_msg(sb, KERN_INFO, "re-mounted. Opts: %s. Quota mode: %s.",
orig_data, ext4_quota_mode(sb));
kfree(orig_data);
return 0;