From: Dave Chinner <dchinner@xxxxxxxxxx>
Make it consistent with the other buffer APIs to return a error and
the buffer is placed in a parameter.
Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
---
fs/xfs/libxfs/xfs_attr_remote.c | 15 ++++++++++-----
fs/xfs/scrub/repair.c | 15 +++++++++------
fs/xfs/xfs_buf.c | 19 ++-----------------
fs/xfs/xfs_buf.h | 20 ++++++++++++++++----
fs/xfs/xfs_qm.c | 9 ++++-----
5 files changed, 41 insertions(+), 37 deletions(-)
diff --git a/fs/xfs/libxfs/xfs_attr_remote.c b/fs/xfs/libxfs/xfs_attr_remote.c
index 7298c148f848..d440393b40eb 100644
--- a/fs/xfs/libxfs/xfs_attr_remote.c
+++ b/fs/xfs/libxfs/xfs_attr_remote.c
@@ -543,6 +543,7 @@ xfs_attr_rmtval_stale(
{
struct xfs_mount *mp = ip->i_mount;
struct xfs_buf *bp;
+ int error;
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
@@ -550,14 +551,18 @@ xfs_attr_rmtval_stale(
XFS_IS_CORRUPT(mp, map->br_startblock == HOLESTARTBLOCK))
return -EFSCORRUPTED;
- bp = xfs_buf_incore(mp->m_ddev_targp,
+ error = xfs_buf_incore(mp->m_ddev_targp,
XFS_FSB_TO_DADDR(mp, map->br_startblock),
- XFS_FSB_TO_BB(mp, map->br_blockcount), incore_flags);
- if (bp) {
- xfs_buf_stale(bp);
- xfs_buf_relse(bp);
+ XFS_FSB_TO_BB(mp, map->br_blockcount),
+ incore_flags, &bp);
+ if (error) {
+ if (error == -ENOENT)
+ return 0;
+ return error;
}
+ xfs_buf_stale(bp);
+ xfs_buf_relse(bp);
return 0;
}
diff --git a/fs/xfs/scrub/repair.c b/fs/xfs/scrub/repair.c
index 1e7b6b209ee8..5e7428782571 100644
--- a/fs/xfs/scrub/repair.c
+++ b/fs/xfs/scrub/repair.c
@@ -457,16 +457,19 @@ xrep_invalidate_blocks(
* assume it's owned by someone else.
*/
for_each_xbitmap_block(fsbno, bmr, n, bitmap) {
+ int error;
+
/* Skip AG headers and post-EOFS blocks */
if (!xfs_verify_fsbno(sc->mp, fsbno))
continue;
- bp = xfs_buf_incore(sc->mp->m_ddev_targp,
+ error = xfs_buf_incore(sc->mp->m_ddev_targp,
XFS_FSB_TO_DADDR(sc->mp, fsbno),
- XFS_FSB_TO_BB(sc->mp, 1), XBF_TRYLOCK);
- if (bp) {
- xfs_trans_bjoin(sc->tp, bp);
- xfs_trans_binval(sc->tp, bp);
- }
+ XFS_FSB_TO_BB(sc->mp, 1), XBF_TRYLOCK, &bp);
+ if (error)
+ continue;
+
+ xfs_trans_bjoin(sc->tp, bp);
+ xfs_trans_binval(sc->tp, bp);
}
return 0;
diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
index bf4e60871068..143e1c70df5d 100644
--- a/fs/xfs/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -616,23 +616,6 @@ xfs_buf_find(
return 0;
}
-struct xfs_buf *
-xfs_buf_incore(
- struct xfs_buftarg *target,
- xfs_daddr_t blkno,
- size_t numblks,
- xfs_buf_flags_t flags)
-{
- struct xfs_buf *bp;
- int error;
- DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
-
- error = xfs_buf_find(target, &map, 1, flags, NULL, &bp);
- if (error)
- return NULL;
- return bp;
-}
-
/*
* Assembles a buffer covering the specified range. The code is optimised for
* cache hits, as metadata intensive workloads will see 3 orders of magnitude
@@ -656,6 +639,8 @@ xfs_buf_get_map(
goto found;
if (error != -ENOENT)
return error;
+ if (flags & XBF_INCORE)
+ return -ENOENT;
error = _xfs_buf_alloc(target, map, nmaps, flags, &new_bp);
if (error)
diff --git a/fs/xfs/xfs_buf.h b/fs/xfs/xfs_buf.h
index 1ee3056ff9cf..58e9034d51bd 100644
--- a/fs/xfs/xfs_buf.h
+++ b/fs/xfs/xfs_buf.h
@@ -42,9 +42,11 @@ struct xfs_buf;
#define _XBF_DELWRI_Q (1u << 22)/* buffer on a delwri queue */
/* flags used only as arguments to access routines */
+#define XBF_INCORE (1u << 29)/* lookup only, return if found in cache */
#define XBF_TRYLOCK (1u << 30)/* lock requested, but do not wait */
#define XBF_UNMAPPED (1u << 31)/* do not map the buffer */
+
typedef unsigned int xfs_buf_flags_t;
#define XFS_BUF_FLAGS \
@@ -63,6 +65,7 @@ typedef unsigned int xfs_buf_flags_t;
{ _XBF_KMEM, "KMEM" }, \
{ _XBF_DELWRI_Q, "DELWRI_Q" }, \
/* The following interface flags should never be set */ \
+ { XBF_INCORE, "INCORE" }, \
{ XBF_TRYLOCK, "TRYLOCK" }, \
{ XBF_UNMAPPED, "UNMAPPED" }
@@ -196,10 +199,6 @@ struct xfs_buf {
};
/* Finding and Reading Buffers */
-struct xfs_buf *xfs_buf_incore(struct xfs_buftarg *target,
- xfs_daddr_t blkno, size_t numblks,
- xfs_buf_flags_t flags);
-
int xfs_buf_get_map(struct xfs_buftarg *target, struct xfs_buf_map *map,
int nmaps, xfs_buf_flags_t flags, struct xfs_buf **bpp);
int xfs_buf_read_map(struct xfs_buftarg *target, struct xfs_buf_map *map,
@@ -209,6 +208,19 @@ void xfs_buf_readahead_map(struct xfs_buftarg *target,
struct xfs_buf_map *map, int nmaps,
const struct xfs_buf_ops *ops);
+static inline int
+xfs_buf_incore(
+ struct xfs_buftarg *target,
+ xfs_daddr_t blkno,
+ size_t numblks,
+ xfs_buf_flags_t flags,
+ struct xfs_buf **bpp)
+{
+ DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
+
+ return xfs_buf_get_map(target, &map, 1, XBF_INCORE | flags, bpp);
+}
+
static inline int
xfs_buf_get(
struct xfs_buftarg *target,
diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c
index abf08bbf34a9..3517a6be8dad 100644
--- a/fs/xfs/xfs_qm.c
+++ b/fs/xfs/xfs_qm.c
@@ -1229,12 +1229,11 @@ xfs_qm_flush_one(
*/
if (!xfs_dqflock_nowait(dqp)) {
/* buf is pinned in-core by delwri list */
- bp = xfs_buf_incore(mp->m_ddev_targp, dqp->q_blkno,
- mp->m_quotainfo->qi_dqchunklen, 0);
- if (!bp) {
- error = -EINVAL;
+ error = xfs_buf_incore(mp->m_ddev_targp, dqp->q_blkno,
+ mp->m_quotainfo->qi_dqchunklen, 0, &bp);
+ if (error)
goto out_unlock;
- }
+
xfs_buf_unlock(bp);
xfs_buf_delwri_pushbuf(bp, buffer_list);
--
2.36.1
