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ext4: add helpers for checking whether quota can be enabled/is journalled

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Right now, there are several places, where we check whether fs is
capable of enabling quota or if quota is journalled with quite long
and non-self-descriptive condition statements.

This patch wraps these statements into helpers for better readability
and easier usage.

Link: https://lore.kernel.org/r/1603336860-16153-1-git-send-email-dotdot@yandex-team.ru
Reviewed-by: Jan Kara <jack@suse.cz>
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 06:20:59 +03:00 committed by Theodore Ts'o
parent face525ecb
commit f177ee0882
3 changed files with 19 additions and 10 deletions
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15
fs/ext4/ext4.h
View file

@ -3361,6 +3361,21 @@ static inline void ext4_unlock_group(struct super_block *sb,
spin_unlock(ext4_group_lock_ptr(sb, group));
}
#ifdef CONFIG_QUOTA
static inline bool ext4_quota_capable(struct super_block *sb)
{
return (test_opt(sb, QUOTA) || ext4_has_feature_quota(sb));
}
static inline bool ext4_is_quota_journalled(struct super_block *sb)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
return (ext4_has_feature_quota(sb) ||
sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]);
}
#endif
/*
* Block validity checking
*/

9
fs/ext4/ext4_jbd2.h
View file

@ -86,17 +86,14 @@
#ifdef CONFIG_QUOTA
/* Amount of blocks needed for quota update - we know that the structure was
* allocated so we need to update only data block */
#define EXT4_QUOTA_TRANS_BLOCKS(sb) ((test_opt(sb, QUOTA) ||\
ext4_has_feature_quota(sb)) ? 1 : 0)
#define EXT4_QUOTA_TRANS_BLOCKS(sb) ((ext4_quota_capable(sb)) ? 1 : 0)
/* Amount of blocks needed for quota insert/delete - we do some block writes
* but inode, sb and group updates are done only once */
#define EXT4_QUOTA_INIT_BLOCKS(sb) ((test_opt(sb, QUOTA) ||\
ext4_has_feature_quota(sb)) ?\
#define EXT4_QUOTA_INIT_BLOCKS(sb) ((ext4_quota_capable(sb)) ?\
(DQUOT_INIT_ALLOC*(EXT4_SINGLEDATA_TRANS_BLOCKS(sb)-3)\
+3+DQUOT_INIT_REWRITE) : 0)
#define EXT4_QUOTA_DEL_BLOCKS(sb) ((test_opt(sb, QUOTA) ||\
ext4_has_feature_quota(sb)) ?\
#define EXT4_QUOTA_DEL_BLOCKS(sb) ((ext4_quota_capable(sb)) ?\
(DQUOT_DEL_ALLOC*(EXT4_SINGLEDATA_TRANS_BLOCKS(sb)-3)\
+3+DQUOT_DEL_REWRITE) : 0)
#else

5
fs/ext4/super.c
View file

@ -6210,11 +6210,8 @@ static int ext4_release_dquot(struct dquot *dquot)
static int ext4_mark_dquot_dirty(struct dquot *dquot)
{
struct super_block *sb = dquot->dq_sb;
struct ext4_sb_info *sbi = EXT4_SB(sb);
/* Are we journaling quotas? */
if (ext4_has_feature_quota(sb) ||
sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) {
if (ext4_is_quota_journalled(sb)) {
dquot_mark_dquot_dirty(dquot);
return ext4_write_dquot(dquot);
} else {