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xfs: place intent recovery under NOFS allocation context 

When recovery starts processing intents, all of the initial intent
allocations are done outside of transaction contexts. That means
they need to specifically use GFP_NOFS as we do not want memory
reclaim to attempt to run direct reclaim of filesystem objects while
we have lots of objects added into deferred operations.

Rather than use GFP_NOFS for these specific allocations, just place
the entire intent recovery process under NOFS context and we can
then just use GFP_KERNEL for these allocations.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
This commit is contained in:
Dave Chinner 2024-01-16 09:59:47 +11:00 committed by Chandan Babu R
parent 0b3a76e955
commit 2c1e31ed5c
5 changed files with 19 additions and 8 deletions
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2
fs/xfs/xfs_attr_item.c
View File

@ -513,7 +513,7 @@ xfs_attri_recover_work(
return ERR_PTR(error);
attr = kzalloc(sizeof(struct xfs_attr_intent) +
sizeof(struct xfs_da_args), GFP_NOFS | __GFP_NOFAIL);
sizeof(struct xfs_da_args), GFP_KERNEL | __GFP_NOFAIL);
args = (struct xfs_da_args *)(attr + 1);
attr->xattri_da_args = args;

3
fs/xfs/xfs_bmap_item.c
View File

@ -445,7 +445,8 @@ xfs_bui_recover_work(
if (error)
return ERR_PTR(error);
bi = kmem_cache_zalloc(xfs_bmap_intent_cache, GFP_NOFS | __GFP_NOFAIL);
bi = kmem_cache_zalloc(xfs_bmap_intent_cache,
GFP_KERNEL | __GFP_NOFAIL);
bi->bi_whichfork = (map->me_flags & XFS_BMAP_EXTENT_ATTR_FORK) ?
XFS_ATTR_FORK : XFS_DATA_FORK;
bi->bi_type = map->me_flags & XFS_BMAP_EXTENT_TYPE_MASK;

18
fs/xfs/xfs_log_recover.c
View File

@ -3443,12 +3443,19 @@ xlog_recover(
* part of recovery so that the root and real-time bitmap inodes can be read in
* from disk in between the two stages. This is necessary so that we can free
* space in the real-time portion of the file system.
*
* We run this whole process under GFP_NOFS allocation context. We do a
* combination of non-transactional and transactional work, yet we really don't
* want to recurse into the filesystem from direct reclaim during any of this
* processing. This allows all the recovery code run here not to care about the
* memory allocation context it is running in.
*/
int
xlog_recover_finish(
struct xlog *log)
{
int error;
unsigned int nofs_flags = memalloc_nofs_save();
int error;
error = xlog_recover_process_intents(log);
if (error) {
@ -3462,7 +3469,7 @@ xlog_recover_finish(
xlog_recover_cancel_intents(log);
xfs_alert(log->l_mp, "Failed to recover intents");
xlog_force_shutdown(log, SHUTDOWN_LOG_IO_ERROR);
return error;
goto out_error;
}
/*
@ -3483,7 +3490,7 @@ xlog_recover_finish(
if (error < 0) {
xfs_alert(log->l_mp,
"Failed to clear log incompat features on recovery");
return error;
goto out_error;
}
}
@ -3508,9 +3515,12 @@ xlog_recover_finish(
* and AIL.
*/
xlog_force_shutdown(log, SHUTDOWN_LOG_IO_ERROR);
goto out_error;
}
return 0;
out_error:
memalloc_nofs_restore(nofs_flags);
return error;
}
void

2
fs/xfs/xfs_refcount_item.c
View File

@ -425,7 +425,7 @@ xfs_cui_recover_work(
struct xfs_refcount_intent *ri;
ri = kmem_cache_alloc(xfs_refcount_intent_cache,
GFP_NOFS | __GFP_NOFAIL);
GFP_KERNEL | __GFP_NOFAIL);
ri->ri_type = pmap->pe_flags & XFS_REFCOUNT_EXTENT_TYPE_MASK;
ri->ri_startblock = pmap->pe_startblock;
ri->ri_blockcount = pmap->pe_len;

2
fs/xfs/xfs_rmap_item.c
View File

@ -455,7 +455,7 @@ xfs_rui_recover_work(
{
struct xfs_rmap_intent *ri;
ri = kmem_cache_alloc(xfs_rmap_intent_cache, GFP_NOFS | __GFP_NOFAIL);
ri = kmem_cache_alloc(xfs_rmap_intent_cache, GFP_KERNEL | __GFP_NOFAIL);
switch (map->me_flags & XFS_RMAP_EXTENT_TYPE_MASK) {
case XFS_RMAP_EXTENT_MAP: