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author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-01-23 08:10:44 -0800 |
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committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-01-23 08:10:44 -0800 |
commit | 55df811f2066fcaec2548248f0a1a6a0c12dc6b8 (patch) | |
tree | 0850f490489e5b941692f3fe36dff5d2c1c35c3c /mm/shmem.c | |
parent | 8e2f2325b73f3e5e46ecffd291556f33b8e3f8c9 (diff) | |
parent | 497ab1f290a26fa9414c5c316515f1e2ddba0803 (diff) |
Merge branch 'next' into for-linus
First round of input updates for 3.14.
Diffstat (limited to 'mm/shmem.c')
-rw-r--r-- | mm/shmem.c | 36 |
1 files changed, 29 insertions, 7 deletions
diff --git a/mm/shmem.c b/mm/shmem.c index 8297623fcaed..902a14842b74 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -2918,13 +2918,8 @@ static struct dentry_operations anon_ops = { .d_dname = simple_dname }; -/** - * shmem_file_setup - get an unlinked file living in tmpfs - * @name: name for dentry (to be seen in /proc/<pid>/maps - * @size: size to be set for the file - * @flags: VM_NORESERVE suppresses pre-accounting of the entire object size - */ -struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags) +static struct file *__shmem_file_setup(const char *name, loff_t size, + unsigned long flags, unsigned int i_flags) { struct file *res; struct inode *inode; @@ -2957,6 +2952,7 @@ struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags if (!inode) goto put_dentry; + inode->i_flags |= i_flags; d_instantiate(path.dentry, inode); inode->i_size = size; clear_nlink(inode); /* It is unlinked */ @@ -2977,6 +2973,32 @@ put_memory: shmem_unacct_size(flags, size); return res; } + +/** + * shmem_kernel_file_setup - get an unlinked file living in tmpfs which must be + * kernel internal. There will be NO LSM permission checks against the + * underlying inode. So users of this interface must do LSM checks at a + * higher layer. The one user is the big_key implementation. LSM checks + * are provided at the key level rather than the inode level. + * @name: name for dentry (to be seen in /proc/<pid>/maps + * @size: size to be set for the file + * @flags: VM_NORESERVE suppresses pre-accounting of the entire object size + */ +struct file *shmem_kernel_file_setup(const char *name, loff_t size, unsigned long flags) +{ + return __shmem_file_setup(name, size, flags, S_PRIVATE); +} + +/** + * shmem_file_setup - get an unlinked file living in tmpfs + * @name: name for dentry (to be seen in /proc/<pid>/maps + * @size: size to be set for the file + * @flags: VM_NORESERVE suppresses pre-accounting of the entire object size + */ +struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags) +{ + return __shmem_file_setup(name, size, flags, 0); +} EXPORT_SYMBOL_GPL(shmem_file_setup); /** |