diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-11-05 09:55:37 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-11-05 09:56:08 +0100 |
| commit | 85c4efbe608887cbce675fad3288172046f74713 (patch) | |
| tree | 42aa0a76ec945920d04344a6c2a7f7c86d054c28 /io_uring/rw.c | |
| parent | bf373d2919d98f3d1fe1b19a0304f72fe74386d9 (diff) | |
| parent | 59b723cd2adbac2a34fc8e12c74ae26ae45bf230 (diff) | |
| download | lwn-85c4efbe608887cbce675fad3288172046f74713.tar.gz lwn-85c4efbe608887cbce675fad3288172046f74713.zip | |
Merge v6.12-rc6 into usb-next
We need the USB fixes in here as well, and this resolves a merge
conflict in:
drivers/usb/typec/tcpm/tcpm.c
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Link: https://lore.kernel.org/r/20241101150730.090dc30f@canb.auug.org.au
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'io_uring/rw.c')
| -rw-r--r-- | io_uring/rw.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/io_uring/rw.c b/io_uring/rw.c index 354c4e175654..155938f10093 100644 --- a/io_uring/rw.c +++ b/io_uring/rw.c @@ -1014,6 +1014,25 @@ int io_read_mshot(struct io_kiocb *req, unsigned int issue_flags) return IOU_OK; } +static bool io_kiocb_start_write(struct io_kiocb *req, struct kiocb *kiocb) +{ + struct inode *inode; + bool ret; + + if (!(req->flags & REQ_F_ISREG)) + return true; + if (!(kiocb->ki_flags & IOCB_NOWAIT)) { + kiocb_start_write(kiocb); + return true; + } + + inode = file_inode(kiocb->ki_filp); + ret = sb_start_write_trylock(inode->i_sb); + if (ret) + __sb_writers_release(inode->i_sb, SB_FREEZE_WRITE); + return ret; +} + int io_write(struct io_kiocb *req, unsigned int issue_flags) { bool force_nonblock = issue_flags & IO_URING_F_NONBLOCK; @@ -1051,8 +1070,8 @@ int io_write(struct io_kiocb *req, unsigned int issue_flags) if (unlikely(ret)) return ret; - if (req->flags & REQ_F_ISREG) - kiocb_start_write(kiocb); + if (unlikely(!io_kiocb_start_write(req, kiocb))) + return -EAGAIN; kiocb->ki_flags |= IOCB_WRITE; if (likely(req->file->f_op->write_iter)) |