shmem: shmem_acct_blocks() and shmem_inode_acct_blocks()

By historical accident, shmem_acct_block() and shmem_inode_acct_block()
were never pluralized when the pages argument was added, despite their
complements being shmem_unacct_blocks() and shmem_inode_unacct_blocks()
all along.  It has been an irritation: fix their naming at last.

Link: https://lkml.kernel.org/r/9124094-e4ab-8be7-ef80-9a87bdc2e4fc@google.comSigned-off-by: Hugh Dickins <hughd@google.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Carlos Maiolino <cem@kernel.org>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Chuck Lever <chuck.lever@oracle.com>
Cc: Darrick J. Wong <djwong@kernel.org>
Cc: Dave Chinner <dchinner@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Tim Chen <tim.c.chen@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

mm/shmem.c

@@ -189,10 +189,10 @@ static inline int shmem_reacct_size(unsigned long flags,
 /*
  * ... whereas tmpfs objects are accounted incrementally as
  * pages are allocated, in order to allow large sparse files.
- * shmem_get_folio reports shmem_acct_block failure as -ENOSPC not -ENOMEM,
+ * shmem_get_folio reports shmem_acct_blocks failure as -ENOSPC not -ENOMEM,
  * so that a failure on a sparse tmpfs mapping will give SIGBUS not OOM.
  */
-static inline int shmem_acct_block(unsigned long flags, long pages)
+static inline int shmem_acct_blocks(unsigned long flags, long pages)
 {
 	if (!(flags & VM_NORESERVE))
 		return 0;
@@ -207,13 +207,13 @@ static inline void shmem_unacct_blocks(unsigned long flags, long pages)
 		vm_unacct_memory(pages * VM_ACCT(PAGE_SIZE));
 }
 
-static int shmem_inode_acct_block(struct inode *inode, long pages)
+static int shmem_inode_acct_blocks(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))
+	if (shmem_acct_blocks(info->flags, pages))
 		return err;
 
 	might_sleep();	/* when quotas */
@@ -447,7 +447,7 @@ bool shmem_charge(struct inode *inode, long pages)
 {
 	struct address_space *mapping = inode->i_mapping;
 
-	if (shmem_inode_acct_block(inode, pages))
+	if (shmem_inode_acct_blocks(inode, pages))
 		return false;
 
 	/* nrpages adjustment first, then shmem_recalc_inode() when balanced */
@@ -1671,7 +1671,7 @@ static struct folio *shmem_alloc_and_acct_folio(gfp_t gfp, struct inode *inode,
 		huge = false;
 	nr = huge ? HPAGE_PMD_NR : 1;
 
-	err = shmem_inode_acct_block(inode, nr);
+	err = shmem_inode_acct_blocks(inode, nr);
 	if (err)
 		goto failed;
 
@@ -2572,7 +2572,7 @@ int shmem_mfill_atomic_pte(pmd_t *dst_pmd,
 	int ret;
 	pgoff_t max_off;
 
-	if (shmem_inode_acct_block(inode, 1)) {
+	if (shmem_inode_acct_blocks(inode, 1)) {
 		/*
 		 * We may have got a page, returned -ENOENT triggering a retry,
 		 * and now we find ourselves with -ENOMEM. Release the page, to