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-rw-r--r--fs/xfs/xfs_trans.h50
-rw-r--r--fs/xfs/xfs_trans_buf.c68
2 files changed, 79 insertions, 39 deletions
diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h
index 7c37b533aa8e..bc2afd52a0b7 100644
--- a/fs/xfs/xfs_trans.h
+++ b/fs/xfs/xfs_trans.h
@@ -448,11 +448,51 @@ xfs_trans_t *xfs_trans_dup(xfs_trans_t *);
int xfs_trans_reserve(xfs_trans_t *, uint, uint, uint,
uint, uint);
void xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t);
-struct xfs_buf *xfs_trans_get_buf(xfs_trans_t *, struct xfs_buftarg *, xfs_daddr_t,
- int, uint);
-int xfs_trans_read_buf(struct xfs_mount *, xfs_trans_t *,
- struct xfs_buftarg *, xfs_daddr_t, int, uint,
- struct xfs_buf **);
+
+struct xfs_buf *xfs_trans_get_buf_map(struct xfs_trans *tp,
+ struct xfs_buftarg *target,
+ struct xfs_buf_map *map, int nmaps,
+ uint flags);
+
+static inline struct xfs_buf *
+xfs_trans_get_buf(
+ struct xfs_trans *tp,
+ struct xfs_buftarg *target,
+ xfs_daddr_t blkno,
+ int numblks,
+ uint flags)
+{
+ struct xfs_buf_map map = {
+ .bm_bn = blkno,
+ .bm_len = numblks,
+ };
+ return xfs_trans_get_buf_map(tp, target, &map, 1, flags);
+}
+
+int xfs_trans_read_buf_map(struct xfs_mount *mp,
+ struct xfs_trans *tp,
+ struct xfs_buftarg *target,
+ struct xfs_buf_map *map, int nmaps,
+ xfs_buf_flags_t flags,
+ struct xfs_buf **bpp);
+
+static inline int
+xfs_trans_read_buf(
+ struct xfs_mount *mp,
+ struct xfs_trans *tp,
+ struct xfs_buftarg *target,
+ xfs_daddr_t blkno,
+ int numblks,
+ xfs_buf_flags_t flags,
+ struct xfs_buf **bpp)
+{
+ struct xfs_buf_map map = {
+ .bm_bn = blkno,
+ .bm_len = numblks,
+ };
+ return xfs_trans_read_buf_map(mp, tp, target, &map, 1, flags, bpp);
+}
+
struct xfs_buf *xfs_trans_getsb(xfs_trans_t *, struct xfs_mount *, int);
void xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *);
diff --git a/fs/xfs/xfs_trans_buf.c b/fs/xfs/xfs_trans_buf.c
index 21c5a5e3700d..6311b99c267f 100644
--- a/fs/xfs/xfs_trans_buf.c
+++ b/fs/xfs/xfs_trans_buf.c
@@ -41,20 +41,26 @@ STATIC struct xfs_buf *
xfs_trans_buf_item_match(
struct xfs_trans *tp,
struct xfs_buftarg *target,
- xfs_daddr_t blkno,
- int len)
+ struct xfs_buf_map *map,
+ int nmaps)
{
struct xfs_log_item_desc *lidp;
struct xfs_buf_log_item *blip;
+ int len = 0;
+ int i;
+
+ for (i = 0; i < nmaps; i++)
+ len += map[i].bm_len;
- len = BBTOB(len);
list_for_each_entry(lidp, &tp->t_items, lid_trans) {
blip = (struct xfs_buf_log_item *)lidp->lid_item;
if (blip->bli_item.li_type == XFS_LI_BUF &&
blip->bli_buf->b_target == target &&
- XFS_BUF_ADDR(blip->bli_buf) == blkno &&
- BBTOB(blip->bli_buf->b_length) == len)
+ XFS_BUF_ADDR(blip->bli_buf) == map[0].bm_bn &&
+ blip->bli_buf->b_length == len) {
+ ASSERT(blip->bli_buf->b_map_count == nmaps);
return blip->bli_buf;
+ }
}
return NULL;
@@ -128,21 +134,19 @@ xfs_trans_bjoin(
* If the transaction pointer is NULL, make this just a normal
* get_buf() call.
*/
-xfs_buf_t *
-xfs_trans_get_buf(xfs_trans_t *tp,
- xfs_buftarg_t *target_dev,
- xfs_daddr_t blkno,
- int len,
- uint flags)
+struct xfs_buf *
+xfs_trans_get_buf_map(
+ struct xfs_trans *tp,
+ struct xfs_buftarg *target,
+ struct xfs_buf_map *map,
+ int nmaps,
+ xfs_buf_flags_t flags)
{
xfs_buf_t *bp;
xfs_buf_log_item_t *bip;
- /*
- * Default to a normal get_buf() call if the tp is NULL.
- */
- if (tp == NULL)
- return xfs_buf_get(target_dev, blkno, len, flags);
+ if (!tp)
+ return xfs_buf_get_map(target, map, nmaps, flags);
/*
* If we find the buffer in the cache with this transaction
@@ -150,7 +154,7 @@ xfs_trans_get_buf(xfs_trans_t *tp,
* have it locked. In this case we just increment the lock
* recursion count and return the buffer to the caller.
*/
- bp = xfs_trans_buf_item_match(tp, target_dev, blkno, len);
+ bp = xfs_trans_buf_item_match(tp, target, map, nmaps);
if (bp != NULL) {
ASSERT(xfs_buf_islocked(bp));
if (XFS_FORCED_SHUTDOWN(tp->t_mountp)) {
@@ -167,7 +171,7 @@ xfs_trans_get_buf(xfs_trans_t *tp,
return (bp);
}
- bp = xfs_buf_get(target_dev, blkno, len, flags);
+ bp = xfs_buf_get_map(target, map, nmaps, flags);
if (bp == NULL) {
return NULL;
}
@@ -246,26 +250,22 @@ int xfs_error_mod = 33;
* read_buf() call.
*/
int
-xfs_trans_read_buf(
- xfs_mount_t *mp,
- xfs_trans_t *tp,
- xfs_buftarg_t *target,
- xfs_daddr_t blkno,
- int len,
- uint flags,
- xfs_buf_t **bpp)
+xfs_trans_read_buf_map(
+ struct xfs_mount *mp,
+ struct xfs_trans *tp,
+ struct xfs_buftarg *target,
+ struct xfs_buf_map *map,
+ int nmaps,
+ xfs_buf_flags_t flags,
+ struct xfs_buf **bpp)
{
xfs_buf_t *bp;
xfs_buf_log_item_t *bip;
int error;
*bpp = NULL;
-
- /*
- * Default to a normal get_buf() call if the tp is NULL.
- */
- if (tp == NULL) {
- bp = xfs_buf_read(target, blkno, len, flags);
+ if (!tp) {
+ bp = xfs_buf_read_map(target, map, nmaps, flags);
if (!bp)
return (flags & XBF_TRYLOCK) ?
EAGAIN : XFS_ERROR(ENOMEM);
@@ -303,7 +303,7 @@ xfs_trans_read_buf(
* If the buffer is not yet read in, then we read it in, increment
* the lock recursion count, and return it to the caller.
*/
- bp = xfs_trans_buf_item_match(tp, target, blkno, len);
+ bp = xfs_trans_buf_item_match(tp, target, map, nmaps);
if (bp != NULL) {
ASSERT(xfs_buf_islocked(bp));
ASSERT(bp->b_transp == tp);
@@ -349,7 +349,7 @@ xfs_trans_read_buf(
return 0;
}
- bp = xfs_buf_read(target, blkno, len, flags);
+ bp = xfs_buf_read_map(target, map, nmaps, flags);
if (bp == NULL) {
*bpp = NULL;
return (flags & XBF_TRYLOCK) ?
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-13 00:13:13 +0000