Re: [PATCH 14/17] xfs: remove parent pointers in unlink

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 10/19/2017 12:43 PM, Darrick J. Wong wrote:
On Wed, Oct 18, 2017 at 03:55:30PM -0700, Allison Henderson wrote:
From: Dave Chinner<dchinner@xxxxxxxxxx>

[bfoster: rebase, use VFS inode generation]
[achender: rebased, changed __unint32_t to xfs_dir2_dataptr_t
	   implemented xfs_attr_remove_parent]

Signed-off-by: Dave Chinner<dchinner@xxxxxxxxxx>
Signed-off-by: Allison Henderson<allison.henderson@xxxxxxxxxx>
---
  fs/xfs/libxfs/xfs_attr.c   | 15 +++++++++++++++
  fs/xfs/libxfs/xfs_parent.c | 22 ++++++++++++++++++++++
  fs/xfs/xfs_attr.h          |  7 +++++++
  fs/xfs/xfs_inode.c         | 10 +++++++++-
  fs/xfs/xfs_qm.c            |  2 +-
  fs/xfs/xfs_qm.h            |  1 +
  6 files changed, 55 insertions(+), 2 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
index e7692ef..7547eb7 100644
--- a/fs/xfs/libxfs/xfs_attr.c
+++ b/fs/xfs/libxfs/xfs_attr.c
@@ -42,6 +42,7 @@
  #include "xfs_quota.h"
  #include "xfs_trans_space.h"
  #include "xfs_trace.h"
+#include "xfs_qm.h"
/*
   * xfs_attr.c
@@ -571,6 +572,20 @@ xfs_attr_set_deferred(
  	return 0;
  }
+int
+xfs_attr_remove_parent(
+	struct xfs_trans		*tp,
+	struct xfs_inode		*dp,
+	struct xfs_parent_name_rec	*rec,
+	int				reclen,
+	struct xfs_defer_ops		*dfops,
+	xfs_fsblock_t			*firstblock)
+{
+	int flags = ATTR_PARENT;
+
+	return xfs_attr_remove_deferred(dp, dfops, (char *) rec, reclen, flags);
return xfs_attr_remove_deferred(dp, dfops, (char *) rec, reclen, ATTR_PARENT); ?

What do you think of changing these prototypes to take (void *) so you
don't have to cast so much?  The name and value are (more or less) a
dumb array of bytes to the filesystem.

Also kinda wondering if the corresponding routines in xfs_parent.c could
just call the xfs_attr functions directly instead of jumping through
single line helpers...
Ok, sure unless anyone is particularly opinionated about them, I will see
if I can collapse them down and simplify some of it
+}
+
  /*
   * Generic handler routine to remove a name from an attribute list.
   * Transitions attribute list from Btree to shortform as necessary.
diff --git a/fs/xfs/libxfs/xfs_parent.c b/fs/xfs/libxfs/xfs_parent.c
index 0707336..ca695c4 100644
--- a/fs/xfs/libxfs/xfs_parent.c
+++ b/fs/xfs/libxfs/xfs_parent.c
@@ -139,3 +139,25 @@ xfs_parent_add(
return xfs_parent_add_nrec(tp, child, &nrec, dfops, firstblock);
  }
+
+/*
+ * Remove a parent record from a child inode.
+ */
+int
+xfs_parent_remove(
+	struct xfs_trans	*tp,
+	struct xfs_inode	*parent,
+	struct xfs_inode	*child,
+	xfs_dir2_dataptr_t	diroffset,
+	struct xfs_defer_ops	*dfops,
+	xfs_fsblock_t		*firstblock)
+{
+	struct xfs_parent_name_rec rec;
+
+	rec.p_ino = cpu_to_be64(parent->i_ino);
+	rec.p_gen = cpu_to_be32(VFS_I(parent)->i_generation);
+	rec.p_diroffset = cpu_to_be32(diroffset);
+
+	return xfs_attr_remove_parent(tp, child, &rec, sizeof(rec),
+				      dfops, firstblock);
+}
diff --git a/fs/xfs/xfs_attr.h b/fs/xfs/xfs_attr.h
index acb6157..7a3bf8b 100644
--- a/fs/xfs/xfs_attr.h
+++ b/fs/xfs/xfs_attr.h
@@ -207,4 +207,11 @@ int xfs_attr_set_parent(struct xfs_trans *tp, struct xfs_inode *ip,
  			const char *value, int valuelen,
  			struct xfs_defer_ops *dfops, xfs_fsblock_t *firstblock);
+int xfs_parent_remove(struct xfs_trans *tp, struct xfs_inode *parent,
+		      struct xfs_inode *child, xfs_dir2_dataptr_t diroffset,
+		      struct xfs_defer_ops *dfops, xfs_fsblock_t *firstblock);
+int xfs_attr_remove_parent(struct xfs_trans *tp, struct xfs_inode *ip,
+			struct xfs_parent_name_rec *rec, int reclen,
+			struct xfs_defer_ops *dfops, xfs_fsblock_t *firstblock);
+
  #endif	/* __XFS_ATTR_H__ */
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 51b623b..a360c3d 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -2612,6 +2612,7 @@ xfs_remove(
  	struct xfs_defer_ops	dfops;
  	xfs_fsblock_t           first_block;
  	uint			resblks;
+	uint32_t		dir_offset;
trace_xfs_remove(dp, name); @@ -2692,12 +2693,19 @@ xfs_remove( xfs_defer_init(&dfops, &first_block);
  	error = xfs_dir_removename(tp, dp, name, ip->i_ino, &first_block,
-				   &dfops, resblks, NULL);
+				   &dfops, resblks, &dir_offset);
  	if (error) {
  		ASSERT(error != -ENOENT);
  		goto out_bmap_cancel;
  	}
+ if (xfs_sb_version_hasparent(&mp->m_sb)) {
+		error = xfs_parent_remove(tp, dp, ip, dir_offset, &dfops,
+					  &first_block);
+		if (error)
+			goto out_bmap_cancel;
+	}
+
  	/*
  	 * If this is a synchronous mount, make sure that the
  	 * remove transaction goes to disk before returning to
diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c
index 010a13a..a047f0f 100644
--- a/fs/xfs/xfs_qm.c
+++ b/fs/xfs/xfs_qm.c
@@ -307,7 +307,7 @@ xfs_qm_dqattach_one(
  	return 0;
  }
-static bool
+bool
  xfs_qm_need_dqattach(
  	struct xfs_inode	*ip)
  {
diff --git a/fs/xfs/xfs_qm.h b/fs/xfs/xfs_qm.h
index 2975a82..9976369 100644
--- a/fs/xfs/xfs_qm.h
+++ b/fs/xfs/xfs_qm.h
@@ -176,6 +176,7 @@ extern int		xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint,
  					struct qc_dqblk *);
  extern int		xfs_qm_scall_quotaon(struct xfs_mount *, uint);
  extern int		xfs_qm_scall_quotaoff(struct xfs_mount *, uint);
+extern bool		xfs_qm_need_dqattach(struct xfs_inode *ip);
Huh?

--D
Oops, this was left over from an earlier version of the set.  I will clean that out.  Thx!
static inline struct xfs_def_quota *
  xfs_get_defquota(struct xfs_dquot *dqp, struct xfs_quotainfo *qi)
--
2.7.4

--
To unsubscribe from this list: send the line "unsubscribe linux-xfs" in
the body of a message tomajordomo@xxxxxxxxxxxxxxx
More majordomo info athttps://urldefense.proofpoint.com/v2/url?u=http-3A__vger.kernel.org_majordomo-2Dinfo.html&d=DwIBAg&c=RoP1YumCXCgaWHvlZYR8PQcxBKCX5YTpkKY057SbK10&r=XFp4B05bcXkJ0dhYaFjd3F8telP01COkBp9cI7mKLb4&m=AP3xXRbI1ezDBf_ru9Ay6jkvjAH2QxSpsltqVIvaZq4&s=Y3VZDyZoeTDKYN7na4r13xYv3nG75lVXDukvn8LIDEE&e=
--
To unsubscribe from this list: send the line "unsubscribe linux-xfs" in
the body of a message tomajordomo@xxxxxxxxxxxxxxx
More majordomo info athttps://urldefense.proofpoint.com/v2/url?u=http-3A__vger.kernel.org_majordomo-2Dinfo.html&d=DwIBAg&c=RoP1YumCXCgaWHvlZYR8PQcxBKCX5YTpkKY057SbK10&r=XFp4B05bcXkJ0dhYaFjd3F8telP01COkBp9cI7mKLb4&m=AP3xXRbI1ezDBf_ru9Ay6jkvjAH2QxSpsltqVIvaZq4&s=Y3VZDyZoeTDKYN7na4r13xYv3nG75lVXDukvn8LIDEE&e=

--
To unsubscribe from this list: send the line "unsubscribe linux-xfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [XFS Filesystem Development (older mail)]     [Linux Filesystem Development]     [Linux Audio Users]     [Yosemite Trails]     [Linux Kernel]     [Linux RAID]     [Linux SCSI]


  Powered by Linux