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| author | Al Viro <viro@zeniv.linux.org.uk> | 2015-04-07 11:28:12 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2015-04-11 22:29:47 -0400 |
| commit | 5f380c7fa7e01f15ca0816bd241ece9a64a73192 (patch) | |
| tree | 2136f54098eb85d21d17ee43f73724a5befd70a1 /fs/block_dev.c | |
| parent | 0b8def9d6dfa6b2a9a2740cf81d8d2c134688d39 (diff) | |
| download | linux-stable-5f380c7fa7e01f15ca0816bd241ece9a64a73192.tar.gz linux-stable-5f380c7fa7e01f15ca0816bd241ece9a64a73192.tar.bz2 linux-stable-5f380c7fa7e01f15ca0816bd241ece9a64a73192.zip | |
lift generic_write_checks() into callers of __generic_file_write_iter()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/block_dev.c')
| -rw-r--r-- | fs/block_dev.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index 6e3de63c3055..bcd7f97beab9 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1597,6 +1597,16 @@ ssize_t blkdev_write_iter(struct kiocb *iocb, struct iov_iter *from) struct file *file = iocb->ki_filp; struct blk_plug plug; ssize_t ret; + size_t count = iov_iter_count(from); + + ret = generic_write_checks(file, &iocb->ki_pos, &count, 1); + if (ret) + return ret; + + if (count == 0) + return 0; + + iov_iter_truncate(from, count); blk_start_plug(&plug); ret = __generic_file_write_iter(iocb, from); |