ARM: dts: dm816x: Fix NAND device nodes

[cascardo/linux.git] / mm / swapfile.c

diff --git a/mm/swapfile.c b/mm/swapfile.c
index 2bb30aa..d2c3736 100644 (file)
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -785,14 +785,12 @@ static unsigned char swap_entry_free(struct swap_info_struct *p,
                        count--;
        }
 
-       if (!count)
-               mem_cgroup_uncharge_swap(entry);
-
        usage = count | has_cache;
        p->swap_map[offset] = usage;
 
        /* free if no reference */
        if (!usage) {
+               mem_cgroup_uncharge_swap(entry);
                dec_cluster_info_page(p, p->cluster_info, offset);
                if (offset < p->lowest_bit)
                        p->lowest_bit = offset;
@@ -1008,7 +1006,7 @@ int free_swap_and_cache(swp_entry_t entry)
                 * Also recheck PageSwapCache now page is locked (above).
                 */
                if (PageSwapCache(page) && !PageWriteback(page) &&
-                               (!page_mapped(page) || vm_swap_full())) {
+                   (!page_mapped(page) || mem_cgroup_swap_full(page))) {
                        delete_from_swap_cache(page);
                        SetPageDirty(page);
                }
@@ -1958,9 +1956,9 @@ SYSCALL_DEFINE1(swapoff, const char __user *, specialfile)
                set_blocksize(bdev, old_block_size);
                blkdev_put(bdev, FMODE_READ | FMODE_WRITE | FMODE_EXCL);
        } else {
-               mutex_lock(&inode->i_mutex);
+               inode_lock(inode);
                inode->i_flags &= ~S_SWAPFILE;
-               mutex_unlock(&inode->i_mutex);
+               inode_unlock(inode);
        }
        filp_close(swap_file, NULL);
 
@@ -2185,7 +2183,7 @@ static int claim_swapfile(struct swap_info_struct *p, struct inode *inode)
                p->flags |= SWP_BLKDEV;
        } else if (S_ISREG(inode->i_mode)) {
                p->bdev = inode->i_sb->s_bdev;
-               mutex_lock(&inode->i_mutex);
+               inode_lock(inode);
                if (IS_SWAPFILE(inode))
                        return -EBUSY;
        } else
@@ -2418,7 +2416,7 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
        mapping = swap_file->f_mapping;
        inode = mapping->host;
 
-       /* If S_ISREG(inode->i_mode) will do mutex_lock(&inode->i_mutex); */
+       /* If S_ISREG(inode->i_mode) will do inode_lock(inode); */
        error = claim_swapfile(p, inode);
        if (unlikely(error))
                goto bad_swap;
@@ -2563,7 +2561,7 @@ bad_swap:
        vfree(cluster_info);
        if (swap_file) {
                if (inode && S_ISREG(inode->i_mode)) {
-                       mutex_unlock(&inode->i_mutex);
+                       inode_unlock(inode);
                        inode = NULL;
                }
                filp_close(swap_file, NULL);
@@ -2576,7 +2574,7 @@ out:
        if (name)
                putname(name);
        if (inode && S_ISREG(inode->i_mode))
-               mutex_unlock(&inode->i_mutex);
+               inode_unlock(inode);
        return error;
 }