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-rw-r--r--mm/shmem.c14
1 files changed, 6 insertions, 8 deletions
diff --git a/mm/shmem.c b/mm/shmem.c
index fcedf5464eb7..c1db11cf220d 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -241,9 +241,7 @@ static void shmem_free_blocks(struct inode *inode, long pages)
struct shmem_sb_info *sbinfo = SHMEM_SB(inode->i_sb);
if (sbinfo->max_blocks) {
percpu_counter_add(&sbinfo->used_blocks, -pages);
- spin_lock(&inode->i_lock);
inode->i_blocks -= pages*BLOCKS_PER_PAGE;
- spin_unlock(&inode->i_lock);
}
}
@@ -432,9 +430,7 @@ static swp_entry_t *shmem_swp_alloc(struct shmem_inode_info *info, unsigned long
sbinfo->max_blocks - 1) >= 0)
return ERR_PTR(-ENOSPC);
percpu_counter_inc(&sbinfo->used_blocks);
- spin_lock(&inode->i_lock);
inode->i_blocks += BLOCKS_PER_PAGE;
- spin_unlock(&inode->i_lock);
}
spin_unlock(&info->lock);
@@ -1421,9 +1417,7 @@ repeat:
shmem_acct_block(info->flags))
goto nospace;
percpu_counter_inc(&sbinfo->used_blocks);
- spin_lock(&inode->i_lock);
inode->i_blocks += BLOCKS_PER_PAGE;
- spin_unlock(&inode->i_lock);
} else if (shmem_acct_block(info->flags))
goto nospace;
@@ -1434,8 +1428,10 @@ repeat:
spin_unlock(&info->lock);
filepage = shmem_alloc_page(gfp, info, idx);
if (!filepage) {
+ spin_lock(&info->lock);
shmem_unacct_blocks(info->flags, 1);
shmem_free_blocks(inode, 1);
+ spin_unlock(&info->lock);
error = -ENOMEM;
goto failed;
}
@@ -1449,8 +1445,10 @@ repeat:
current->mm, GFP_KERNEL);
if (error) {
page_cache_release(filepage);
+ spin_lock(&info->lock);
shmem_unacct_blocks(info->flags, 1);
shmem_free_blocks(inode, 1);
+ spin_unlock(&info->lock);
filepage = NULL;
goto failed;
}
@@ -1480,10 +1478,10 @@ repeat:
* be done automatically.
*/
if (ret) {
- spin_unlock(&info->lock);
- page_cache_release(filepage);
shmem_unacct_blocks(info->flags, 1);
shmem_free_blocks(inode, 1);
+ spin_unlock(&info->lock);
+ page_cache_release(filepage);
filepage = NULL;
if (error)
goto failed;
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