From: Lukas Czerner <lczerner@xxxxxxxxxx>
Make shmem_inode_acct_block() return proper error code instead of bool.
This will be useful later when we introduce quota support.
There should be no functional change.
Signed-off-by: Lukas Czerner <lczerner@xxxxxxxxxx>
Signed-off-by: Carlos Maiolino <cmaiolino@xxxxxxxxxx>
---
mm/shmem.c | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)
diff --git a/mm/shmem.c b/mm/shmem.c
index 448f393d8ab2b..0e63ea5f6ce69 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -198,13 +198,14 @@ static inline void shmem_unacct_blocks(unsigned long flags, long pages)
vm_unacct_memory(pages * VM_ACCT(PAGE_SIZE));
}
-static inline bool shmem_inode_acct_block(struct inode *inode, long pages)
+static inline int shmem_inode_acct_block(struct inode *inode, long pages)
{
struct shmem_inode_info *info = SHMEM_I(inode);
struct shmem_sb_info *sbinfo = SHMEM_SB(inode->i_sb);
+ int err = -ENOSPC;
if (shmem_acct_block(info->flags, pages))
- return false;
+ return err;
if (sbinfo->max_blocks) {
if (percpu_counter_compare(&sbinfo->used_blocks,
@@ -213,11 +214,11 @@ static inline bool shmem_inode_acct_block(struct inode *inode, long pages)
percpu_counter_add(&sbinfo->used_blocks, pages);
}
- return true;
+ return 0;
unacct:
shmem_unacct_blocks(info->flags, pages);
- return false;
+ return err;
}
static inline void shmem_inode_unacct_blocks(struct inode *inode, long pages)
@@ -369,7 +370,7 @@ bool shmem_charge(struct inode *inode, long pages)
struct shmem_inode_info *info = SHMEM_I(inode);
unsigned long flags;
- if (!shmem_inode_acct_block(inode, pages))
+ if (shmem_inode_acct_block(inode, pages))
return false;
/* nrpages adjustment first, then shmem_recalc_inode() when balanced */
@@ -1589,7 +1590,8 @@ static struct folio *shmem_alloc_and_acct_folio(gfp_t gfp, struct inode *inode,
huge = false;
nr = huge ? HPAGE_PMD_NR : 1;
- if (!shmem_inode_acct_block(inode, nr))
+ err = shmem_inode_acct_block(inode, nr);
+ if (err)
goto failed;
if (huge)
@@ -2433,7 +2435,7 @@ int shmem_mfill_atomic_pte(struct mm_struct *dst_mm,
int ret;
pgoff_t max_off;
- if (!shmem_inode_acct_block(inode, 1)) {
+ if (shmem_inode_acct_block(inode, 1)) {
/*
* We may have got a page, returned -ENOENT triggering a retry,
* and now we find ourselves with -ENOMEM. Release the page, to
--
2.30.2
