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io_uring/rw: split io_read() into a helper

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Commit a08d195b586a217d76b42062f88f375a3eedda4d upstream.

Add __io_read() which does the grunt of the work, leaving the completion
side to the new io_read(). No functional changes in this patch.

Reviewed-by: Gabriel Krisman Bertazi <krisman@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
(cherry picked from commit a08d195b586a217d76b42062f88f375a3eedda4d)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jens Axboe
2023-09-11 13:31:56 -06:00
committed by Greg Kroah-Hartman
parent 400a2ae671
commit 72060434a1
1 changed files with 13 additions and 2 deletions
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15
io_uring/rw.c
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@@ -691,7 +691,7 @@ static int io_rw_init_file(struct io_kiocb *req, fmode_t mode)
return 0;
}
int io_read(struct io_kiocb *req, unsigned int issue_flags)
static int __io_read(struct io_kiocb *req, unsigned int issue_flags)
{
struct io_rw *rw = io_kiocb_to_cmd(req, struct io_rw);
struct io_rw_state __s, *s = &__s;
@@ -836,7 +836,18 @@ done:
/* it's faster to check here then delegate to kfree */
if (iovec)
kfree(iovec);
return kiocb_done(req, ret, issue_flags);
return ret;
}
int io_read(struct io_kiocb *req, unsigned int issue_flags)
{
int ret;
ret = __io_read(req, issue_flags);
if (ret >= 0)
return kiocb_done(req, ret, issue_flags);
return ret;
}
static bool io_kiocb_start_write(struct io_kiocb *req, struct kiocb *kiocb)