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| author | Christoph Hellwig <hch@lst.de> | 2017-05-27 11:16:51 +0300 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-06-29 17:49:23 -0400 |
| commit | 18e9710ee59ce3bd2a2512ddcd3f7ceebe8b8d17 (patch) | |
| tree | a09b5ebcb9460ad374b798258b8f46dd370cad88 /fs/read_write.c | |
| parent | edab5fe38c2c17a7d7ea5f82e1d9503bfc79a8ac (diff) | |
| download | lwn-18e9710ee59ce3bd2a2512ddcd3f7ceebe8b8d17.tar.gz lwn-18e9710ee59ce3bd2a2512ddcd3f7ceebe8b8d17.zip | |
fs: implement vfs_iter_read using do_iter_read
De-dupliate some code and allow for passing the flags argument to
vfs_iter_read. Additional it properly updates atime now.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/read_write.c')
| -rw-r--r-- | fs/read_write.c | 29 |
1 files changed, 9 insertions, 20 deletions
diff --git a/fs/read_write.c b/fs/read_write.c index 64b61a032a56..4dab30b62f0e 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -356,26 +356,6 @@ out_putf: } #endif -ssize_t vfs_iter_read(struct file *file, struct iov_iter *iter, loff_t *ppos) -{ - struct kiocb kiocb; - ssize_t ret; - - if (!file->f_op->read_iter) - return -EINVAL; - - init_sync_kiocb(&kiocb, file); - kiocb.ki_pos = *ppos; - - iter->type |= READ; - ret = call_read_iter(file, &kiocb, iter); - BUG_ON(ret == -EIOCBQUEUED); - if (ret > 0) - *ppos = kiocb.ki_pos; - return ret; -} -EXPORT_SYMBOL(vfs_iter_read); - ssize_t vfs_iter_write(struct file *file, struct iov_iter *iter, loff_t *ppos) { struct kiocb kiocb; @@ -944,6 +924,15 @@ out: return ret; } +ssize_t vfs_iter_read(struct file *file, struct iov_iter *iter, loff_t *ppos, + int flags) +{ + if (!file->f_op->read_iter) + return -EINVAL; + return do_iter_read(file, iter, ppos, flags); +} +EXPORT_SYMBOL(vfs_iter_read); + static ssize_t do_iter_write(struct file *file, struct iov_iter *iter, loff_t *pos, int flags) { |