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splice: simplify a conditional in copy_splice_read

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Check for -EFAULT instead of wrapping the check in an ret < 0 block.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Reviewed-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/r/20230614140341.521331-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2023-06-14 16:03:39 +02:00 committed by Jens Axboe
parent 0b24be4691
commit 2e82f6c3bf
1 changed files with 7 additions and 7 deletions
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14
fs/splice.c
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@ -368,15 +368,15 @@ ssize_t copy_splice_read(struct file *in, loff_t *ppos,
if (ret > 0) {
keep = DIV_ROUND_UP(ret, PAGE_SIZE);
*ppos = kiocb.ki_pos;
} else if (ret < 0) {
/*
* callers of ->splice_read() expect -EAGAIN on
* "can't put anything in there", rather than -EFAULT.
*/
if (ret == -EFAULT)
ret = -EAGAIN;
}
/*
* Callers of ->splice_read() expect -EAGAIN on "can't put anything in
* there", rather than -EFAULT.
*/
if (ret == -EFAULT)
ret = -EAGAIN;
/* Free any pages that didn't get touched at all. */
if (keep < npages)
release_pages(pages + keep, npages - keep);