summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorDarrick J. Wong <djwong@kernel.org>2021-01-27 12:07:57 -0800
committerDarrick J. Wong <djwong@kernel.org>2021-02-03 09:18:49 -0800
commitf2f7b9ff62a28928f6fe2bd55cdb4d4b02ab7477 (patch)
treef6fbded8c9f4b87453a546dbcbecc26a942ca9b4
parentf273387b048543f2b8b2d809cc65fca28e7788a1 (diff)
xfs: refactor inode creation transaction/inode/quota allocation idiom
For file creation, create a new helper xfs_trans_alloc_icreate that allocates a transaction and reserves the appropriate amount of quota against that transction. Replace all the open-coded idioms with a single call to this helper so that we can contain the retry loops in the next patchset. This changes the locking behavior for non-tempfile creation slightly, in that we now make the quota reservation without holding the directory ILOCK. While the dquots chosen for inode creation are based on the directory state at a given point in time, the directory ILOCK was released as soon as the dquot references are picked up. Hence it was never necessary to hold the directory ILOCK for the quota reservation. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
-rw-r--r--fs/xfs/xfs_inode.c28
-rw-r--r--fs/xfs/xfs_symlink.c14
-rw-r--r--fs/xfs/xfs_trans.c33
-rw-r--r--fs/xfs/xfs_trans.h6
4 files changed, 53 insertions, 28 deletions
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 4bbd2fb628f7..636ac13b1df2 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -1022,25 +1022,20 @@ xfs_create(
* the case we'll drop the one we have and get a more
* appropriate transaction later.
*/
- error = xfs_trans_alloc(mp, tres, resblks, 0, 0, &tp);
+ error = xfs_trans_alloc_icreate(mp, tres, udqp, gdqp, pdqp, resblks,
+ &tp);
if (error == -ENOSPC) {
/* flush outstanding delalloc blocks and retry */
xfs_flush_inodes(mp);
- error = xfs_trans_alloc(mp, tres, resblks, 0, 0, &tp);
+ error = xfs_trans_alloc_icreate(mp, tres, udqp, gdqp, pdqp,
+ resblks, &tp);
}
if (error)
- goto out_release_inode;
+ goto out_release_dquots;
xfs_ilock(dp, XFS_ILOCK_EXCL | XFS_ILOCK_PARENT);
unlock_dp_on_error = true;
- /*
- * Reserve disk quota and the inode.
- */
- error = xfs_trans_reserve_quota_icreate(tp, udqp, gdqp, pdqp, resblks);
- if (error)
- goto out_trans_cancel;
-
error = xfs_iext_count_may_overflow(dp, XFS_DATA_FORK,
XFS_IEXT_DIR_MANIP_CNT(mp));
if (error)
@@ -1120,7 +1115,7 @@ xfs_create(
xfs_finish_inode_setup(ip);
xfs_irele(ip);
}
-
+ out_release_dquots:
xfs_qm_dqrele(udqp);
xfs_qm_dqrele(gdqp);
xfs_qm_dqrele(pdqp);
@@ -1164,13 +1159,10 @@ xfs_create_tmpfile(
resblks = XFS_IALLOC_SPACE_RES(mp);
tres = &M_RES(mp)->tr_create_tmpfile;
- error = xfs_trans_alloc(mp, tres, resblks, 0, 0, &tp);
- if (error)
- goto out_release_inode;
-
- error = xfs_trans_reserve_quota_icreate(tp, udqp, gdqp, pdqp, resblks);
+ error = xfs_trans_alloc_icreate(mp, tres, udqp, gdqp, pdqp, resblks,
+ &tp);
if (error)
- goto out_trans_cancel;
+ goto out_release_dquots;
error = xfs_dir_ialloc(&tp, dp, mode, 0, 0, prid, &ip);
if (error)
@@ -1213,7 +1205,7 @@ xfs_create_tmpfile(
xfs_finish_inode_setup(ip);
xfs_irele(ip);
}
-
+ out_release_dquots:
xfs_qm_dqrele(udqp);
xfs_qm_dqrele(gdqp);
xfs_qm_dqrele(pdqp);
diff --git a/fs/xfs/xfs_symlink.c b/fs/xfs/xfs_symlink.c
index d5dee8f409b2..8565663b16cd 100644
--- a/fs/xfs/xfs_symlink.c
+++ b/fs/xfs/xfs_symlink.c
@@ -197,9 +197,10 @@ xfs_symlink(
fs_blocks = xfs_symlink_blocks(mp, pathlen);
resblks = XFS_SYMLINK_SPACE_RES(mp, link_name->len, fs_blocks);
- error = xfs_trans_alloc(mp, &M_RES(mp)->tr_symlink, resblks, 0, 0, &tp);
+ error = xfs_trans_alloc_icreate(mp, &M_RES(mp)->tr_symlink, udqp, gdqp,
+ pdqp, resblks, &tp);
if (error)
- goto out_release_inode;
+ goto out_release_dquots;
xfs_ilock(dp, XFS_ILOCK_EXCL | XFS_ILOCK_PARENT);
unlock_dp_on_error = true;
@@ -212,13 +213,6 @@ xfs_symlink(
goto out_trans_cancel;
}
- /*
- * Reserve disk quota : blocks and inode.
- */
- error = xfs_trans_reserve_quota_icreate(tp, udqp, gdqp, pdqp, resblks);
- if (error)
- goto out_trans_cancel;
-
error = xfs_iext_count_may_overflow(dp, XFS_DATA_FORK,
XFS_IEXT_DIR_MANIP_CNT(mp));
if (error)
@@ -347,7 +341,7 @@ out_release_inode:
xfs_finish_inode_setup(ip);
xfs_irele(ip);
}
-
+out_release_dquots:
xfs_qm_dqrele(udqp);
xfs_qm_dqrele(gdqp);
xfs_qm_dqrele(pdqp);
diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c
index 151f274eee43..6c68635cc6ac 100644
--- a/fs/xfs/xfs_trans.c
+++ b/fs/xfs/xfs_trans.c
@@ -21,6 +21,8 @@
#include "xfs_error.h"
#include "xfs_defer.h"
#include "xfs_inode.h"
+#include "xfs_dquot_item.h"
+#include "xfs_dquot.h"
kmem_zone_t *xfs_trans_zone;
@@ -1074,3 +1076,34 @@ out_cancel:
xfs_iunlock(ip, XFS_ILOCK_EXCL);
return error;
}
+
+/*
+ * Allocate an transaction in preparation for inode creation by reserving quota
+ * against the given dquots. Callers are not required to hold any inode locks.
+ */
+int
+xfs_trans_alloc_icreate(
+ struct xfs_mount *mp,
+ struct xfs_trans_res *resv,
+ struct xfs_dquot *udqp,
+ struct xfs_dquot *gdqp,
+ struct xfs_dquot *pdqp,
+ unsigned int dblocks,
+ struct xfs_trans **tpp)
+{
+ struct xfs_trans *tp;
+ int error;
+
+ error = xfs_trans_alloc(mp, resv, dblocks, 0, 0, &tp);
+ if (error)
+ return error;
+
+ error = xfs_trans_reserve_quota_icreate(tp, udqp, gdqp, pdqp, dblocks);
+ if (error) {
+ xfs_trans_cancel(tp);
+ return error;
+ }
+
+ *tpp = tp;
+ return 0;
+}
diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h
index 52bbd7e6a552..04c132c55e9b 100644
--- a/fs/xfs/xfs_trans.h
+++ b/fs/xfs/xfs_trans.h
@@ -268,8 +268,14 @@ xfs_trans_item_relog(
return lip->li_ops->iop_relog(lip, tp);
}
+struct xfs_dquot;
+
int xfs_trans_alloc_inode(struct xfs_inode *ip, struct xfs_trans_res *resv,
unsigned int dblocks, unsigned int rblocks, bool force,
struct xfs_trans **tpp);
+int xfs_trans_alloc_icreate(struct xfs_mount *mp, struct xfs_trans_res *resv,
+ struct xfs_dquot *udqp, struct xfs_dquot *gdqp,
+ struct xfs_dquot *pdqp, unsigned int dblocks,
+ struct xfs_trans **tpp);
#endif /* __XFS_TRANS_H__ */