diff options
Diffstat (limited to 'fs/aio.c')
| -rw-r--r-- | fs/aio.c | 26 |
1 files changed, 12 insertions, 14 deletions
@@ -1461,11 +1461,11 @@ static int aio_setup_rw(int rw, struct iocb *iocb, struct iovec **iovec, return import_iovec(rw, buf, len, UIO_FASTIOV, iovec, iter); } -static inline ssize_t aio_rw_ret(struct kiocb *req, ssize_t ret) +static inline void aio_rw_done(struct kiocb *req, ssize_t ret) { switch (ret) { case -EIOCBQUEUED: - return ret; + break; case -ERESTARTSYS: case -ERESTARTNOINTR: case -ERESTARTNOHAND: @@ -1478,7 +1478,6 @@ static inline ssize_t aio_rw_ret(struct kiocb *req, ssize_t ret) /*FALLTHRU*/ default: aio_complete_rw(req, ret, 0); - return 0; } } @@ -1507,10 +1506,10 @@ static ssize_t aio_read(struct kiocb *req, struct iocb *iocb, bool vectored, goto out_fput; ret = rw_verify_area(READ, file, &req->ki_pos, iov_iter_count(&iter)); if (!ret) - ret = aio_rw_ret(req, call_read_iter(file, req, &iter)); + aio_rw_done(req, call_read_iter(file, req, &iter)); kfree(iovec); out_fput: - if (unlikely(ret && ret != -EIOCBQUEUED)) + if (unlikely(ret)) fput(file); return ret; } @@ -1552,11 +1551,11 @@ static ssize_t aio_write(struct kiocb *req, struct iocb *iocb, bool vectored, __sb_writers_release(file_inode(file)->i_sb, SB_FREEZE_WRITE); } req->ki_flags |= IOCB_WRITE; - ret = aio_rw_ret(req, call_write_iter(file, req, &iter)); + aio_rw_done(req, call_write_iter(file, req, &iter)); } kfree(iovec); out_fput: - if (unlikely(ret && ret != -EIOCBQUEUED)) + if (unlikely(ret)) fput(file); return ret; } @@ -1587,7 +1586,7 @@ static int aio_fsync(struct fsync_iocb *req, struct iocb *iocb, bool datasync) req->datasync = datasync; INIT_WORK(&req->work, aio_fsync_work); schedule_work(&req->work); - return -EIOCBQUEUED; + return 0; } /* need to use list_del_init so we can check if item was present */ @@ -1715,7 +1714,7 @@ static ssize_t aio_poll(struct aio_kiocb *aiocb, struct iocb *iocb) done: if (mask) __aio_poll_complete(aiocb, mask); - return -EIOCBQUEUED; + return 0; out_fail: fput(req->file); return -EINVAL; /* same as no support for IOCB_CMD_POLL */ @@ -1800,12 +1799,11 @@ static int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb, } /* - * If ret is -EIOCBQUEUED, ownership of the file reference acquired - * above passed to the file system, which at this point might have - * dropped the reference, so we must be careful to not reference it - * once we have called into the file system. + * If ret is 0, we'd either done aio_complete() ourselves or have + * arranged for that to be done asynchronously. Anything non-zero + * means that we need to destroy req ourselves. */ - if (ret && ret != -EIOCBQUEUED) + if (ret) goto out_put_req; return 0; out_put_req: |