mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-16 09:13:55 +08:00
ext4: optimize ext4_should_retry_alloc() to improve ENOSPC performance
If there are no pending blocks to be released after a commit, forcing a journal commit has no hope of helping. It's possible that a commit had just completed, so if there are now free blocks available for allocation, it's worth retrying the commit. Reported-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
parent
1a695a905c
commit
d08854f5bc
@ -610,6 +610,8 @@ int ext4_should_retry_alloc(struct super_block *sb, int *retries)
|
|||||||
|
|
||||||
jbd_debug(1, "%s: retrying operation after ENOSPC\n", sb->s_id);
|
jbd_debug(1, "%s: retrying operation after ENOSPC\n", sb->s_id);
|
||||||
|
|
||||||
|
smp_mb();
|
||||||
|
if (EXT4_SB(sb)->s_mb_free_pending)
|
||||||
jbd2_journal_force_commit_nested(EXT4_SB(sb)->s_journal);
|
jbd2_journal_force_commit_nested(EXT4_SB(sb)->s_journal);
|
||||||
return 1;
|
return 1;
|
||||||
}
|
}
|
||||||
|
@ -1430,6 +1430,7 @@ struct ext4_sb_info {
|
|||||||
unsigned short *s_mb_offsets;
|
unsigned short *s_mb_offsets;
|
||||||
unsigned int *s_mb_maxs;
|
unsigned int *s_mb_maxs;
|
||||||
unsigned int s_group_info_size;
|
unsigned int s_group_info_size;
|
||||||
|
unsigned int s_mb_free_pending;
|
||||||
|
|
||||||
/* tunables */
|
/* tunables */
|
||||||
unsigned long s_stripe;
|
unsigned long s_stripe;
|
||||||
|
@ -175,6 +175,13 @@ struct ext4_journal_cb_entry {
|
|||||||
* There is no guaranteed calling order of multiple registered callbacks on
|
* There is no guaranteed calling order of multiple registered callbacks on
|
||||||
* the same transaction.
|
* the same transaction.
|
||||||
*/
|
*/
|
||||||
|
static inline void _ext4_journal_callback_add(handle_t *handle,
|
||||||
|
struct ext4_journal_cb_entry *jce)
|
||||||
|
{
|
||||||
|
/* Add the jce to transaction's private list */
|
||||||
|
list_add_tail(&jce->jce_list, &handle->h_transaction->t_private_list);
|
||||||
|
}
|
||||||
|
|
||||||
static inline void ext4_journal_callback_add(handle_t *handle,
|
static inline void ext4_journal_callback_add(handle_t *handle,
|
||||||
void (*func)(struct super_block *sb,
|
void (*func)(struct super_block *sb,
|
||||||
struct ext4_journal_cb_entry *jce,
|
struct ext4_journal_cb_entry *jce,
|
||||||
@ -187,10 +194,11 @@ static inline void ext4_journal_callback_add(handle_t *handle,
|
|||||||
/* Add the jce to transaction's private list */
|
/* Add the jce to transaction's private list */
|
||||||
jce->jce_func = func;
|
jce->jce_func = func;
|
||||||
spin_lock(&sbi->s_md_lock);
|
spin_lock(&sbi->s_md_lock);
|
||||||
list_add_tail(&jce->jce_list, &handle->h_transaction->t_private_list);
|
_ext4_journal_callback_add(handle, jce);
|
||||||
spin_unlock(&sbi->s_md_lock);
|
spin_unlock(&sbi->s_md_lock);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* ext4_journal_callback_del: delete a registered callback
|
* ext4_journal_callback_del: delete a registered callback
|
||||||
* @handle: active journal transaction handle on which callback was registered
|
* @handle: active journal transaction handle on which callback was registered
|
||||||
|
@ -2627,6 +2627,7 @@ int ext4_mb_init(struct super_block *sb)
|
|||||||
|
|
||||||
spin_lock_init(&sbi->s_md_lock);
|
spin_lock_init(&sbi->s_md_lock);
|
||||||
spin_lock_init(&sbi->s_bal_lock);
|
spin_lock_init(&sbi->s_bal_lock);
|
||||||
|
sbi->s_mb_free_pending = 0;
|
||||||
|
|
||||||
sbi->s_mb_max_to_scan = MB_DEFAULT_MAX_TO_SCAN;
|
sbi->s_mb_max_to_scan = MB_DEFAULT_MAX_TO_SCAN;
|
||||||
sbi->s_mb_min_to_scan = MB_DEFAULT_MIN_TO_SCAN;
|
sbi->s_mb_min_to_scan = MB_DEFAULT_MIN_TO_SCAN;
|
||||||
@ -2814,6 +2815,9 @@ static void ext4_free_data_callback(struct super_block *sb,
|
|||||||
/* we expect to find existing buddy because it's pinned */
|
/* we expect to find existing buddy because it's pinned */
|
||||||
BUG_ON(err != 0);
|
BUG_ON(err != 0);
|
||||||
|
|
||||||
|
spin_lock(&EXT4_SB(sb)->s_md_lock);
|
||||||
|
EXT4_SB(sb)->s_mb_free_pending -= entry->efd_count;
|
||||||
|
spin_unlock(&EXT4_SB(sb)->s_md_lock);
|
||||||
|
|
||||||
db = e4b.bd_info;
|
db = e4b.bd_info;
|
||||||
/* there are blocks to put in buddy to make them really free */
|
/* there are blocks to put in buddy to make them really free */
|
||||||
@ -4583,6 +4587,7 @@ ext4_mb_free_metadata(handle_t *handle, struct ext4_buddy *e4b,
|
|||||||
{
|
{
|
||||||
ext4_group_t group = e4b->bd_group;
|
ext4_group_t group = e4b->bd_group;
|
||||||
ext4_grpblk_t cluster;
|
ext4_grpblk_t cluster;
|
||||||
|
ext4_grpblk_t clusters = new_entry->efd_count;
|
||||||
struct ext4_free_data *entry;
|
struct ext4_free_data *entry;
|
||||||
struct ext4_group_info *db = e4b->bd_info;
|
struct ext4_group_info *db = e4b->bd_info;
|
||||||
struct super_block *sb = e4b->bd_sb;
|
struct super_block *sb = e4b->bd_sb;
|
||||||
@ -4649,8 +4654,11 @@ ext4_mb_free_metadata(handle_t *handle, struct ext4_buddy *e4b,
|
|||||||
}
|
}
|
||||||
}
|
}
|
||||||
/* Add the extent to transaction's private list */
|
/* Add the extent to transaction's private list */
|
||||||
ext4_journal_callback_add(handle, ext4_free_data_callback,
|
new_entry->efd_jce.jce_func = ext4_free_data_callback;
|
||||||
&new_entry->efd_jce);
|
spin_lock(&sbi->s_md_lock);
|
||||||
|
_ext4_journal_callback_add(handle, &new_entry->efd_jce);
|
||||||
|
sbi->s_mb_free_pending += clusters;
|
||||||
|
spin_unlock(&sbi->s_md_lock);
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
Loading…
Reference in New Issue
Block a user