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| author | Anatol Pomozov <anatol.pomozov@gmail.com> | 2012-09-13 05:11:55 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2013-02-23 05:31:32 +0100 |
| commit | 39b652527457452f09b35044fb4f8b3b0eabafdf (patch) | |
| tree | acd8fda1d4e37c58c68fe0cfb9288d5d06e14441 /mm/shmem.c | |
| parent | propagate error from get_empty_filp() to its callers (diff) | |
| download | linux-39b652527457452f09b35044fb4f8b3b0eabafdf.tar.xz linux-39b652527457452f09b35044fb4f8b3b0eabafdf.zip | |
fs: Preserve error code in get_empty_filp(), part 2
Allocating a file structure in function get_empty_filp() might fail because
of several reasons:
- not enough memory for file structures
- operation is not allowed
- user is over its limit
Currently the function returns NULL in all cases and we loose the exact
reason of the error. All callers of get_empty_filp() assume that the function
can fail with ENFILE only.
Return error through pointer. Change all callers to preserve this error code.
[AV: cleaned up a bit, carved the get_empty_filp() part out into a separate commit
(things remaining here deal with alloc_file()), removed pipe(2) behaviour change]
Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com>
Reviewed-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'mm/shmem.c')
| -rw-r--r-- | mm/shmem.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/shmem.c b/mm/shmem.c index 814d5546cb35..abf07f754277 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -2913,10 +2913,10 @@ struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags goto put_dentry; #endif - error = -ENFILE; file = alloc_file(&path, FMODE_WRITE | FMODE_READ, &shmem_file_operations); - if (!file) + error = PTR_ERR(file); + if (IS_ERR(file)) goto put_dentry; return file; |