From: Christoph Hellwig <hch@lst.de>
To: linux-xfs@vger.kernel.org
Subject: [PATCH 13/13] xfs: reuse _xfs_buf_read for re-reading the superblock
Date: Sun, 30 Aug 2020 08:15:12 +0200 [thread overview]
Message-ID: <20200830061512.1148591-14-hch@lst.de> (raw)
In-Reply-To: <20200830061512.1148591-1-hch@lst.de>
Instead of poking deeply into buffer cache internals when re-reading the
superblock during log recovery just generalize _xfs_buf_read and use it
there.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
fs/xfs/xfs_buf.c | 24 +++++++++++++++++-------
fs/xfs/xfs_buf.h | 10 ++--------
fs/xfs/xfs_log_recover.c | 11 +++--------
3 files changed, 22 insertions(+), 23 deletions(-)
diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
index 7f8abcbe98a447..0de6b110391202 100644
--- a/fs/xfs/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -52,6 +52,15 @@ static kmem_zone_t *xfs_buf_zone;
* b_lock (trylock due to inversion)
*/
+static int __xfs_buf_submit(struct xfs_buf *bp, bool wait);
+
+static inline int
+xfs_buf_submit(
+ struct xfs_buf *bp)
+{
+ return __xfs_buf_submit(bp, !(bp->b_flags & XBF_ASYNC));
+}
+
static inline int
xfs_buf_is_vmapped(
struct xfs_buf *bp)
@@ -751,16 +760,18 @@ xfs_buf_get_map(
return 0;
}
-STATIC int
+int
_xfs_buf_read(
- xfs_buf_t *bp,
- xfs_buf_flags_t flags)
+ struct xfs_buf *bp,
+ xfs_buf_flags_t flags,
+ const struct xfs_buf_ops *ops)
{
ASSERT(!(flags & XBF_WRITE));
ASSERT(bp->b_maps[0].bm_bn != XFS_BUF_DADDR_NULL);
- bp->b_flags &= ~(XBF_WRITE | XBF_ASYNC | XBF_READ_AHEAD);
+ bp->b_flags &= ~(XBF_WRITE | XBF_ASYNC | XBF_READ_AHEAD | XBF_DONE);
bp->b_flags |= flags & (XBF_READ | XBF_ASYNC | XBF_READ_AHEAD);
+ bp->b_ops = ops;
return xfs_buf_submit(bp);
}
@@ -825,8 +836,7 @@ xfs_buf_read_map(
if (!(bp->b_flags & XBF_DONE)) {
/* Initiate the buffer read and wait. */
XFS_STATS_INC(target->bt_mount, xb_get_read);
- bp->b_ops = ops;
- error = _xfs_buf_read(bp, flags);
+ error = _xfs_buf_read(bp, flags, ops);
/* Readahead iodone already dropped the buffer, so exit. */
if (flags & XBF_ASYNC)
@@ -1639,7 +1649,7 @@ xfs_buf_iowait(
* safe to reference the buffer after a call to this function unless the caller
* holds an additional reference itself.
*/
-int
+static int
__xfs_buf_submit(
struct xfs_buf *bp,
bool wait)
diff --git a/fs/xfs/xfs_buf.h b/fs/xfs/xfs_buf.h
index 9eb4044597c985..db172599d32dc1 100644
--- a/fs/xfs/xfs_buf.h
+++ b/fs/xfs/xfs_buf.h
@@ -249,6 +249,8 @@ int xfs_buf_get_uncached(struct xfs_buftarg *target, size_t numblks, int flags,
int xfs_buf_read_uncached(struct xfs_buftarg *target, xfs_daddr_t daddr,
size_t numblks, int flags, struct xfs_buf **bpp,
const struct xfs_buf_ops *ops);
+int _xfs_buf_read(struct xfs_buf *bp, xfs_buf_flags_t flags,
+ const struct xfs_buf_ops *ops);
void xfs_buf_hold(struct xfs_buf *bp);
/* Releasing Buffers */
@@ -275,14 +277,6 @@ extern void __xfs_buf_ioerror(struct xfs_buf *bp, int error,
#define xfs_buf_ioerror(bp, err) __xfs_buf_ioerror((bp), (err), __this_address)
extern void xfs_buf_ioerror_alert(struct xfs_buf *bp, xfs_failaddr_t fa);
void xfs_buf_ioend_fail(struct xfs_buf *);
-
-extern int __xfs_buf_submit(struct xfs_buf *bp, bool);
-static inline int xfs_buf_submit(struct xfs_buf *bp)
-{
- bool wait = bp->b_flags & XBF_ASYNC ? false : true;
- return __xfs_buf_submit(bp, wait);
-}
-
void xfs_buf_zero(struct xfs_buf *bp, size_t boff, size_t bsize);
void __xfs_buf_mark_corrupt(struct xfs_buf *bp, xfs_failaddr_t fa);
#define xfs_buf_mark_corrupt(bp) __xfs_buf_mark_corrupt((bp), __this_address)
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index 5449cba657352c..1771bc3646f4b1 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -3305,16 +3305,11 @@ xlog_do_recover(
xlog_assign_tail_lsn(mp);
/*
- * Now that we've finished replaying all buffer and inode
- * updates, re-read in the superblock and reverify it.
+ * Now that we've finished replaying all buffer and inode updates,
+ * re-read in the superblock and reverify it.
*/
bp = xfs_getsb(mp);
- bp->b_flags &= ~(XBF_DONE | XBF_ASYNC);
- ASSERT(!(bp->b_flags & XBF_WRITE));
- bp->b_flags |= XBF_READ;
- bp->b_ops = &xfs_sb_buf_ops;
-
- error = xfs_buf_submit(bp);
+ error = _xfs_buf_read(bp, XBF_READ, &xfs_sb_buf_ops);
if (error) {
if (!XFS_FORCED_SHUTDOWN(mp)) {
xfs_buf_ioerror_alert(bp, __this_address);
--
2.28.0
next prev parent reply other threads:[~2020-08-30 6:15 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-30 6:14 tidy up the buffer cache implementation v2 Christoph Hellwig
2020-08-30 6:15 ` [PATCH 01/13] xfs: refactor the buf ioend disposition code Christoph Hellwig
2020-08-30 6:15 ` [PATCH 02/13] xfs: mark xfs_buf_ioend static Christoph Hellwig
2020-08-30 6:15 ` [PATCH 03/13] xfs: refactor xfs_buf_ioend Christoph Hellwig
2020-08-30 6:15 ` [PATCH 04/13] xfs: move the buffer retry logic to xfs_buf.c Christoph Hellwig
2020-08-30 6:15 ` [PATCH 05/13] xfs: fold xfs_buf_ioend_finish into xfs_ioend Christoph Hellwig
2020-08-30 6:15 ` [PATCH 06/13] xfs: refactor xfs_buf_ioerror_fail_without_retry Christoph Hellwig
2020-08-30 6:15 ` [PATCH 07/13] xfs: remove xfs_buf_ioerror_retry Christoph Hellwig
2020-08-30 6:15 ` [PATCH 08/13] xfs: lift the XBF_IOEND_FAIL handling into xfs_buf_ioend_disposition Christoph Hellwig
2020-08-30 6:15 ` [PATCH 09/13] xfs: simplify the xfs_buf_ioend_disposition calling convention Christoph Hellwig
2020-08-31 20:26 ` Darrick J. Wong
2020-08-30 6:15 ` [PATCH 10/13] xfs: use xfs_buf_item_relse in xfs_buf_item_done Christoph Hellwig
2020-08-30 6:15 ` [PATCH 11/13] xfs: clear the read/write flags later in xfs_buf_ioend Christoph Hellwig
2020-08-30 6:15 ` [PATCH 12/13] xfs: remove xlog_recover_iodone Christoph Hellwig
2020-08-30 6:15 ` Christoph Hellwig [this message]
2020-08-31 20:40 ` [PATCH 13/13] xfs: reuse _xfs_buf_read for re-reading the superblock Darrick J. Wong
2020-09-01 6:43 ` Christoph Hellwig
-- strict thread matches above, loose matches on Subject: below --
2020-07-09 15:04 tidy up the buffer cache implementation Christoph Hellwig
2020-07-09 15:04 ` [PATCH 13/13] xfs: reuse _xfs_buf_read for re-reading the superblock Christoph Hellwig
2020-08-18 23:02 ` Darrick J. Wong
2020-08-29 6:47 ` Christoph Hellwig
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