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authorDave Chinner <dchinner@redhat.com>2022-07-07 19:07:40 +1000
committerDave Chinner <david@fromorbit.com>2022-07-07 19:07:40 +1000
commit08d3e84feeb8cb8e20d54f659446b98fe17913aa (patch)
tree41eca242228114713e2bcc33f900ee9d0f83450a /fs/xfs/xfs_reflink.c
parent76b47e528e3a27a3bf3b3f9153aad9435e03be8c (diff)
xfs: pass perag to xfs_alloc_read_agf()
xfs_alloc_read_agf() initialises the perag if it hasn't been done yet, so it makes sense to pass it the perag rather than pull a reference from the buffer. This allows callers to be per-ag centric rather than passing mount/agno pairs everywhere. Whilst modifying the xfs_reflink_find_shared() function definition, declare it static and remove the extern declaration as it is an internal function only these days. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Diffstat (limited to 'fs/xfs/xfs_reflink.c')
-rw-r--r--fs/xfs/xfs_reflink.c40
1 files changed, 22 insertions, 18 deletions
diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c
index e7a7c00d93be..81994f4706de 100644
--- a/fs/xfs/xfs_reflink.c
+++ b/fs/xfs/xfs_reflink.c
@@ -125,11 +125,10 @@
* shared blocks. If there are no shared extents, fbno and flen will
* be set to NULLAGBLOCK and 0, respectively.
*/
-int
+static int
xfs_reflink_find_shared(
- struct xfs_mount *mp,
+ struct xfs_perag *pag,
struct xfs_trans *tp,
- xfs_agnumber_t agno,
xfs_agblock_t agbno,
xfs_extlen_t aglen,
xfs_agblock_t *fbno,
@@ -140,11 +139,11 @@ xfs_reflink_find_shared(
struct xfs_btree_cur *cur;
int error;
- error = xfs_alloc_read_agf(mp, tp, agno, 0, &agbp);
+ error = xfs_alloc_read_agf(pag, tp, 0, &agbp);
if (error)
return error;
- cur = xfs_refcountbt_init_cursor(mp, tp, agbp, agbp->b_pag);
+ cur = xfs_refcountbt_init_cursor(pag->pag_mount, tp, agbp, pag);
error = xfs_refcount_find_shared(cur, agbno, aglen, fbno, flen,
find_end_of_shared);
@@ -171,7 +170,8 @@ xfs_reflink_trim_around_shared(
struct xfs_bmbt_irec *irec,
bool *shared)
{
- xfs_agnumber_t agno;
+ struct xfs_mount *mp = ip->i_mount;
+ struct xfs_perag *pag;
xfs_agblock_t agbno;
xfs_extlen_t aglen;
xfs_agblock_t fbno;
@@ -186,12 +186,13 @@ xfs_reflink_trim_around_shared(
trace_xfs_reflink_trim_around_shared(ip, irec);
- agno = XFS_FSB_TO_AGNO(ip->i_mount, irec->br_startblock);
- agbno = XFS_FSB_TO_AGBNO(ip->i_mount, irec->br_startblock);
+ pag = xfs_perag_get(mp, XFS_FSB_TO_AGNO(mp, irec->br_startblock));
+ agbno = XFS_FSB_TO_AGBNO(mp, irec->br_startblock);
aglen = irec->br_blockcount;
- error = xfs_reflink_find_shared(ip->i_mount, NULL, agno, agbno,
- aglen, &fbno, &flen, true);
+ error = xfs_reflink_find_shared(pag, NULL, agbno, aglen, &fbno, &flen,
+ true);
+ xfs_perag_put(pag);
if (error)
return error;
@@ -1420,11 +1421,6 @@ xfs_reflink_inode_has_shared_extents(
struct xfs_bmbt_irec got;
struct xfs_mount *mp = ip->i_mount;
struct xfs_ifork *ifp;
- xfs_agnumber_t agno;
- xfs_agblock_t agbno;
- xfs_extlen_t aglen;
- xfs_agblock_t rbno;
- xfs_extlen_t rlen;
struct xfs_iext_cursor icur;
bool found;
int error;
@@ -1437,17 +1433,25 @@ xfs_reflink_inode_has_shared_extents(
*has_shared = false;
found = xfs_iext_lookup_extent(ip, ifp, 0, &icur, &got);
while (found) {
+ struct xfs_perag *pag;
+ xfs_agblock_t agbno;
+ xfs_extlen_t aglen;
+ xfs_agblock_t rbno;
+ xfs_extlen_t rlen;
+
if (isnullstartblock(got.br_startblock) ||
got.br_state != XFS_EXT_NORM)
goto next;
- agno = XFS_FSB_TO_AGNO(mp, got.br_startblock);
+
+ pag = xfs_perag_get(mp, XFS_FSB_TO_AGNO(mp, got.br_startblock));
agbno = XFS_FSB_TO_AGBNO(mp, got.br_startblock);
aglen = got.br_blockcount;
-
- error = xfs_reflink_find_shared(mp, tp, agno, agbno, aglen,
+ error = xfs_reflink_find_shared(pag, tp, agbno, aglen,
&rbno, &rlen, false);
+ xfs_perag_put(pag);
if (error)
return error;
+
/* Is there still a shared block here? */
if (rbno != NULLAGBLOCK) {
*has_shared = true;