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xfs: Remove XFS_MOUNT_RETERR

PATCH Applied Jeff Liu 3 participants 4 messages May 2, 2013 – Jun 19, 2013 XFS filesystem

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Jeff Liu

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#0 lore raw

PATCH v3 1/2 xfs: Remove XFS_MOUNT_RETERR

From: Jie Liu <[email protected]>

XFS_MOUNT_RETERR is going to be set at xfs_parseargs() if mp->m_dalign is enabled, so any time we enter "if (mp->m_dalign)" branch in xfs_update_alignment(), XFS_MOUNT_RETERR is set and so we always be emitting a warning and returning an error.

Hence, we can remove it and get rid of a couple of redundant check up against it at xfs_upate_alignment().

Thanks Dave Chinner for the suggestions of simplify the code in xfs_parseargs().

Cc Dave Chinner <[email protected]>
Cc Mark Tinguely <[email protected]>
---
 fs/xfs/xfs_mount.c |   37 +++++++++++--------------------------
 fs/xfs/xfs_mount.h |    2 --
 fs/xfs/xfs_super.c |   11 +++--------
 3 files changed, 14 insertions(+), 36 deletions(-)
fs/xfs/xfs_mount.c +11 -26
index 3806088..95bd4b5 100644
@@ -872,42 +872,27 @@ xfs_update_alignment(xfs_mount_t *mp)
 		 */
 		if ((BBTOB(mp->m_dalign) & mp->m_blockmask) ||
 		    (BBTOB(mp->m_swidth) & mp->m_blockmask)) {
-			if (mp->m_flags & XFS_MOUNT_RETERR) {
-				xfs_warn(mp, "alignment check failed: "
-					 "(sunit/swidth vs. blocksize)");
-				return XFS_ERROR(EINVAL);
-			}
-			mp->m_dalign = mp->m_swidth = 0;
+			xfs_warn(mp,
+		"alignment check failed: sunit/swidth vs. blocksize(%d)",
+				sbp->sb_blocksize);
+			return XFS_ERROR(EINVAL);
 		} else {
 			/*
 			 * Convert the stripe unit and width to FSBs.
 			 */
 			mp->m_dalign = XFS_BB_TO_FSBT(mp, mp->m_dalign);
 			if (mp->m_dalign && (sbp->sb_agblocks % mp->m_dalign)) {
-				if (mp->m_flags & XFS_MOUNT_RETERR) {
-					xfs_warn(mp, "alignment check failed: "
-						 "(sunit/swidth vs. ag size)");
-					return XFS_ERROR(EINVAL);
-				}
 				xfs_warn(mp,
-		"stripe alignment turned off: sunit(%d)/swidth(%d) "
-		"incompatible with agsize(%d)",
-					mp->m_dalign, mp->m_swidth,
-					sbp->sb_agblocks);
-
-				mp->m_dalign = 0;
-				mp->m_swidth = 0;
+			"alignment check failed: sunit/swidth vs. agsize(%d)",
+					 sbp->sb_agblocks);
+				return XFS_ERROR(EINVAL);
 			} else if (mp->m_dalign) {
 				mp->m_swidth = XFS_BB_TO_FSBT(mp, mp->m_swidth);
 			} else {
-				if (mp->m_flags & XFS_MOUNT_RETERR) {
-					xfs_warn(mp, "alignment check failed: "
-						"sunit(%d) less than bsize(%d)",
-						mp->m_dalign,
-						mp->m_blockmask +1);
-					return XFS_ERROR(EINVAL);
-				}
-				mp->m_swidth = 0;
+				xfs_warn(mp,
+			"alignment check failed: sunit(%d) less than bsize(%d)",
+					 mp->m_dalign, sbp->sb_blocksize);
+				return XFS_ERROR(EINVAL);
 			}
 		}
 
fs/xfs/xfs_mount.h +0 -2
index b68e56b..ace092a7 100644
@@ -228,8 +228,6 @@ typedef struct xfs_mount {
 						   operations, typically for
 						   disk errors in metadata */
 #define XFS_MOUNT_DISCARD	(1ULL << 5)	/* discard unused blocks */
-#define XFS_MOUNT_RETERR	(1ULL << 6)     /* return alignment errors to
-						   user */
 #define XFS_MOUNT_NOALIGN	(1ULL << 7)	/* turn off stripe alignment
 						   allocations */
 #define XFS_MOUNT_ATTR2		(1ULL << 8)	/* allow use of attr2 format */
fs/xfs/xfs_super.c +3 -8
index ea341ce..7bf1389 100644
@@ -439,20 +439,15 @@ xfs_parseargs(
 	}
 
 done:
-	if (!(mp->m_flags & XFS_MOUNT_NOALIGN)) {
+	if (dsunit && !(mp->m_flags & XFS_MOUNT_NOALIGN)) {
 		/*
 		 * At this point the superblock has not been read
 		 * in, therefore we do not know the block size.
 		 * Before the mount call ends we will convert
 		 * these to FSBs.
 		 */
-		if (dsunit) {
-			mp->m_dalign = dsunit;
-			mp->m_flags |= XFS_MOUNT_RETERR;
-		}
-
-		if (dswidth)
-			mp->m_swidth = dswidth;
+		mp->m_dalign = dsunit;
+		mp->m_swidth = dswidth;
 	}
 
 	if (mp->m_logbufs != -1 &&
Signature · 6 lines
1.7.9.5

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Reviewed-by on v3 1/2
#1 lore raw
Quoted 7 lines · Jeff Liu

From: Jie Liu<[email protected]>

XFS_MOUNT_RETERR is going to be set at xfs_parseargs() if mp->m_dalign is enabled, so any time we enter "if (mp->m_dalign)" branch in xfs_update_alignment(), XFS_MOUNT_RETERR is set and so we always be emitting a warning and returning an error.

Quoted 7 lines

Hence, we can remove it and get rid of a couple of redundant check up against it at xfs_upate_alignment().

Thanks Dave Chinner for the suggestions of simplify the code in xfs_parseargs().

"alignment check failed: sunit/swidth vs. blocksize(%d)",

				                   ^^^^
"alignment check failed: sunit/swidth vs. agsize(%d)",
                                                ^^^^
"alignment check failed: sunit(%d) less than bsize(%d)",
                              ^^^^                ^^^^

I know you copied these statements verbatim, but I wonder why all these statements do not have a space between the type and value?

Looks good.

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author
#2 lore raw
Quoted 16 lines · Mark Tinguely
Quoted 7 lines · Jeff Liu

From: Jie Liu<[email protected]>

XFS_MOUNT_RETERR is going to be set at xfs_parseargs() if mp->m_dalign is enabled, so any time we enter "if (mp->m_dalign)" branch in xfs_update_alignment(), XFS_MOUNT_RETERR is set and so we always be emitting a warning and returning an error.

Quoted 7 lines

Hence, we can remove it and get rid of a couple of redundant check up against it at xfs_upate_alignment().

Thanks Dave Chinner for the suggestions of simplify the code in xfs_parseargs().

Quoted 8 lines

"alignment check failed: sunit/swidth vs. blocksize(%d)",

				                   ^^^^
"alignment check failed: sunit/swidth vs. agsize(%d)",
                                                 ^^^^
"alignment check failed: sunit(%d) less than bsize(%d)",
                               ^^^^                ^^^^

I know you copied these statements verbatim, but I wonder why all these statements do not have a space between the type and value?

Looks the old statements violate the above rule(don't have a space between them) as there are many places formating the statements with a space.

Thanks,
-Jeff

Quoted 10 lines

Looks good.

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Applied
#3 lore raw
In reply to Jeff Liu
Quoted 10 lines · Jeff Liu

From: Jie Liu <[email protected]>

XFS_MOUNT_RETERR is going to be set at xfs_parseargs() if mp->m_dalign is enabled, so any time we enter "if (mp->m_dalign)" branch in xfs_update_alignment(), XFS_MOUNT_RETERR is set and so we always be emitting a warning and returning an error.

Hence, we can remove it and get rid of a couple of redundant check up against it at xfs_upate_alignment().

Quoted 6 lines

Thanks Dave Chinner for the suggestions of simplify the code in xfs_parseargs().

Cc Dave Chinner <[email protected]>
Cc Mark Tinguely <[email protected]>

Applied.

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