diff options
Diffstat (limited to 'mm/shmem.c')
| -rw-r--r-- | mm/shmem.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/mm/shmem.c b/mm/shmem.c index b98e1011858c..440e2a7e6c1c 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -701,8 +701,7 @@ static void shmem_evict_inode(struct inode *inode) list_del_init(&info->swaplist); mutex_unlock(&shmem_swaplist_mutex); } - } else - kfree(info->symlink); + } simple_xattrs_free(&info->xattrs); WARN_ON(inode->i_blocks); @@ -912,6 +911,9 @@ static int shmem_writepage(struct page *page, struct writeback_control *wbc) if (!swap.val) goto redirty; + if (mem_cgroup_try_charge_swap(page, swap)) + goto free_swap; + /* * Add inode to shmem_unuse()'s list of swapped-out inodes, * if it's not already there. Do it now before the page is @@ -940,6 +942,7 @@ static int shmem_writepage(struct page *page, struct writeback_control *wbc) } mutex_unlock(&shmem_swaplist_mutex); +free_swap: swapcache_free(swap); redirty: set_page_dirty(page); @@ -1898,7 +1901,7 @@ static loff_t shmem_file_llseek(struct file *file, loff_t offset, int whence) if (whence != SEEK_DATA && whence != SEEK_HOLE) return generic_file_llseek_size(file, offset, whence, MAX_LFS_FILESIZE, i_size_read(inode)); - mutex_lock(&inode->i_mutex); + inode_lock(inode); /* We're holding i_mutex so we can access i_size directly */ if (offset < 0) @@ -1922,7 +1925,7 @@ static loff_t shmem_file_llseek(struct file *file, loff_t offset, int whence) if (offset >= 0) offset = vfs_setpos(file, offset, MAX_LFS_FILESIZE); - mutex_unlock(&inode->i_mutex); + inode_unlock(inode); return offset; } @@ -2087,7 +2090,7 @@ int shmem_add_seals(struct file *file, unsigned int seals) if (seals & ~(unsigned int)F_ALL_SEALS) return -EINVAL; - mutex_lock(&inode->i_mutex); + inode_lock(inode); if (info->seals & F_SEAL_SEAL) { error = -EPERM; @@ -2110,7 +2113,7 @@ int shmem_add_seals(struct file *file, unsigned int seals) error = 0; unlock: - mutex_unlock(&inode->i_mutex); + inode_unlock(inode); return error; } EXPORT_SYMBOL_GPL(shmem_add_seals); @@ -2160,7 +2163,7 @@ static long shmem_fallocate(struct file *file, int mode, loff_t offset, if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE)) return -EOPNOTSUPP; - mutex_lock(&inode->i_mutex); + inode_lock(inode); if (mode & FALLOC_FL_PUNCH_HOLE) { struct address_space *mapping = file->f_mapping; @@ -2273,7 +2276,7 @@ undone: inode->i_private = NULL; spin_unlock(&inode->i_lock); out: - mutex_unlock(&inode->i_mutex); + inode_unlock(inode); return error; } @@ -2545,13 +2548,12 @@ static int shmem_symlink(struct inode *dir, struct dentry *dentry, const char *s info = SHMEM_I(inode); inode->i_size = len-1; if (len <= SHORT_SYMLINK_LEN) { - info->symlink = kmemdup(symname, len, GFP_KERNEL); - if (!info->symlink) { + inode->i_link = kmemdup(symname, len, GFP_KERNEL); + if (!inode->i_link) { iput(inode); return -ENOMEM; } inode->i_op = &shmem_short_symlink_operations; - inode->i_link = info->symlink; } else { inode_nohighmem(inode); error = shmem_getpage(inode, 0, &page, SGP_WRITE, NULL); @@ -3128,6 +3130,7 @@ static struct inode *shmem_alloc_inode(struct super_block *sb) static void shmem_destroy_callback(struct rcu_head *head) { struct inode *inode = container_of(head, struct inode, i_rcu); + kfree(inode->i_link); kmem_cache_free(shmem_inode_cachep, SHMEM_I(inode)); } |