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[Qemu-devel] [PULL 04/42] block/raw-posix: create do_fallocate helper
From: |
Kevin Wolf |
Subject: |
[Qemu-devel] [PULL 04/42] block/raw-posix: create do_fallocate helper |
Date: |
Fri, 6 Feb 2015 17:40:11 +0100 |
From: "Denis V. Lunev" <address@hidden>
The pattern
do {
if (fallocate(s->fd, mode, offset, len) == 0) {
return 0;
}
} while (errno == EINTR);
ret = translate_err(-errno);
will be commonly useful in next patches. Create helper for it.
CC: Kevin Wolf <address@hidden>
CC: Stefan Hajnoczi <address@hidden>
CC: Peter Lieven <address@hidden>
CC: Fam Zheng <address@hidden>
Signed-off-by: Denis V. Lunev <address@hidden>
Reviewed-by: Max Reitz <address@hidden>
Reviewed-by: Peter Lieven <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
---
block/raw-posix.c | 22 ++++++++++++++--------
1 file changed, 14 insertions(+), 8 deletions(-)
diff --git a/block/raw-posix.c b/block/raw-posix.c
index 24300d0..2aa268a 100644
--- a/block/raw-posix.c
+++ b/block/raw-posix.c
@@ -902,6 +902,18 @@ static int translate_err(int err)
return err;
}
+#if defined(CONFIG_FALLOCATE_PUNCH_HOLE)
+static int do_fallocate(int fd, int mode, off_t offset, off_t len)
+{
+ do {
+ if (fallocate(fd, mode, offset, len) == 0) {
+ return 0;
+ }
+ } while (errno == EINTR);
+ return translate_err(-errno);
+}
+#endif
+
static ssize_t handle_aiocb_write_zeroes(RawPosixAIOData *aiocb)
{
int ret = -EOPNOTSUPP;
@@ -965,14 +977,8 @@ static ssize_t handle_aiocb_discard(RawPosixAIOData *aiocb)
#endif
#ifdef CONFIG_FALLOCATE_PUNCH_HOLE
- do {
- if (fallocate(s->fd, FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
- aiocb->aio_offset, aiocb->aio_nbytes) == 0) {
- return 0;
- }
- } while (errno == EINTR);
-
- ret = -errno;
+ ret = do_fallocate(s->fd, FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
+ aiocb->aio_offset, aiocb->aio_nbytes);
#endif
}
--
1.8.3.1
- [Qemu-devel] [PULL 00/42] Block patches, Kevin Wolf, 2015/02/06
- [Qemu-devel] [PULL 01/42] Restore atapi_dma flag across migration, Kevin Wolf, 2015/02/06
- [Qemu-devel] [PULL 05/42] block/raw-posix: refactor handle_aiocb_write_zeroes a bit, Kevin Wolf, 2015/02/06
- [Qemu-devel] [PULL 07/42] block/raw-posix: call plain fallocate in handle_aiocb_write_zeroes, Kevin Wolf, 2015/02/06
- [Qemu-devel] [PULL 03/42] block/raw-posix: create translate_err helper to merge errno values, Kevin Wolf, 2015/02/06
- [Qemu-devel] [PULL 04/42] block/raw-posix: create do_fallocate helper,
Kevin Wolf <=
- [Qemu-devel] [PULL 02/42] atapi migration: Throw recoverable error to avoid recovery, Kevin Wolf, 2015/02/06
- [Qemu-devel] [PULL 10/42] qemu-img: Add QEMU_PKGVERSION to QEMU_IMG_VERSION, Kevin Wolf, 2015/02/06
- [Qemu-devel] [PULL 06/42] block: use fallocate(FALLOC_FL_ZERO_RANGE) in handle_aiocb_write_zeroes, Kevin Wolf, 2015/02/06
- [Qemu-devel] [PULL 09/42] block: change default for discard and write zeroes to INT_MAX, Kevin Wolf, 2015/02/06
- [Qemu-devel] [PULL 08/42] block: use fallocate(FALLOC_FL_PUNCH_HOLE) & fallocate(0) to write zeroes, Kevin Wolf, 2015/02/06
- [Qemu-devel] [PULL 13/42] hw/virtio-blk: add a constant for max number of merged requests, Kevin Wolf, 2015/02/06
- [Qemu-devel] [PULL 11/42] qed: Really remove unused field QEDAIOCB.finished, Kevin Wolf, 2015/02/06
- [Qemu-devel] [PULL 12/42] block: add accounting for merged requests, Kevin Wolf, 2015/02/06
- [Qemu-devel] [PULL 14/42] block-backend: expose bs->bl.max_transfer_length, Kevin Wolf, 2015/02/06
- [Qemu-devel] [PULL 17/42] qemu-iotests: Fix supported_oses check, Kevin Wolf, 2015/02/06