diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/shmem.c | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/mm/shmem.c b/mm/shmem.c index fbcb3c96a186..35b524085c44 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -266,6 +266,14 @@ bool shmem_charge(struct inode *inode, long pages) if (shmem_acct_block(info->flags, pages)) return false; + + if (sbinfo->max_blocks) { + if (percpu_counter_compare(&sbinfo->used_blocks, + sbinfo->max_blocks - pages) > 0) + goto unacct; + percpu_counter_add(&sbinfo->used_blocks, pages); + } + spin_lock_irqsave(&info->lock, flags); info->alloced += pages; inode->i_blocks += pages * BLOCKS_PER_PAGE; @@ -273,20 +281,11 @@ bool shmem_charge(struct inode *inode, long pages) spin_unlock_irqrestore(&info->lock, flags); inode->i_mapping->nrpages += pages; - if (!sbinfo->max_blocks) - return true; - if (percpu_counter_compare(&sbinfo->used_blocks, - sbinfo->max_blocks - pages) > 0) { - inode->i_mapping->nrpages -= pages; - spin_lock_irqsave(&info->lock, flags); - info->alloced -= pages; - shmem_recalc_inode(inode); - spin_unlock_irqrestore(&info->lock, flags); - shmem_unacct_blocks(info->flags, pages); - return false; - } - percpu_counter_add(&sbinfo->used_blocks, pages); return true; + +unacct: + shmem_unacct_blocks(info->flags, pages); + return false; } void shmem_uncharge(struct inode *inode, long pages) |