diff options
Diffstat (limited to 'fs/hugetlbfs/inode.c')
| -rw-r--r-- | fs/hugetlbfs/inode.c | 35 |
1 files changed, 13 insertions, 22 deletions
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index 9b800d97a68..c1462d43e72 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -26,7 +26,6 @@ #include <linux/pagevec.h> #include <linux/parser.h> #include <linux/mman.h> -#include <linux/quotaops.h> #include <linux/slab.h> #include <linux/dnotify.h> #include <linux/statfs.h> @@ -313,16 +312,6 @@ out: return retval; } -/* - * Read a page. Again trivial. If it didn't already exist - * in the page cache, it is zero-filled. - */ -static int hugetlbfs_readpage(struct file *file, struct page * page) -{ - unlock_page(page); - return -EINVAL; -} - static int hugetlbfs_write_begin(struct file *file, struct address_space *mapping, loff_t pos, unsigned len, unsigned flags, @@ -702,7 +691,6 @@ static void hugetlbfs_destroy_inode(struct inode *inode) } static const struct address_space_operations hugetlbfs_aops = { - .readpage = hugetlbfs_readpage, .write_begin = hugetlbfs_write_begin, .write_end = hugetlbfs_write_end, .set_page_dirty = hugetlbfs_set_page_dirty, @@ -842,7 +830,7 @@ hugetlbfs_parse_options(char *options, struct hugetlbfs_config *pconfig) bad_val: printk(KERN_ERR "hugetlbfs: Bad value '%s' for mount option '%s'\n", args[0].from, p); - return 1; + return -EINVAL; } static int @@ -943,14 +931,13 @@ static struct vfsmount *hugetlbfs_vfsmount; static int can_do_hugetlb_shm(void) { - return likely(capable(CAP_IPC_LOCK) || - in_group_p(sysctl_hugetlb_shm_group) || - can_do_mlock()); + return capable(CAP_IPC_LOCK) || in_group_p(sysctl_hugetlb_shm_group); } struct file *hugetlb_file_setup(const char *name, size_t size, int acctflag) { int error = -ENOMEM; + int unlock_shm = 0; struct file *file; struct inode *inode; struct dentry *dentry, *root; @@ -960,11 +947,14 @@ struct file *hugetlb_file_setup(const char *name, size_t size, int acctflag) if (!hugetlbfs_vfsmount) return ERR_PTR(-ENOENT); - if (!can_do_hugetlb_shm()) - return ERR_PTR(-EPERM); - - if (!user_shm_lock(size, user)) - return ERR_PTR(-ENOMEM); + if (!can_do_hugetlb_shm()) { + if (user_shm_lock(size, user)) { + unlock_shm = 1; + WARN_ONCE(1, + "Using mlock ulimits for SHM_HUGETLB deprecated\n"); + } else + return ERR_PTR(-EPERM); + } root = hugetlbfs_vfsmount->mnt_root; quick_string.name = name; @@ -1004,7 +994,8 @@ out_inode: out_dentry: dput(dentry); out_shm_unlock: - user_shm_unlock(size, user); + if (unlock_shm) + user_shm_unlock(size, user); return ERR_PTR(error); } |