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authorLinus Torvalds <torvalds@linux-foundation.org>2017-07-14 22:57:32 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-07-14 22:57:32 -0700
commita80099a152d0719e2d8d750e07f4ffa991553d30 (patch)
treefc2d76c18e09220c0ddbdb6575662dd23e1782e0
parentMerge branch 'for-4.13-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux (diff)
parentvfs: in iomap seek_{hole,data}, return -ENXIO for negative offsets (diff)
downloadlinux-dev-a80099a152d0719e2d8d750e07f4ffa991553d30.tar.xz
linux-dev-a80099a152d0719e2d8d750e07f4ffa991553d30.zip
Merge tag 'xfs-4.13-merge-6' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull XFS fixes from Darrick Wong: "Largely debugging and regression fixes. - Add some locking assertions for the _ilock helpers. - Revert the XFS_QMOPT_NOLOCK patch; after discussion with hch the online fsck patch that would have needed it has been redesigned and no longer needs it. - Fix behavioral regression of SEEK_HOLE/DATA with negative offsets to match 4.12-era XFS behavior" * tag 'xfs-4.13-merge-6' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: vfs: in iomap seek_{hole,data}, return -ENXIO for negative offsets Revert "xfs: grab dquots without taking the ilock" xfs: assert locking precondition in xfs_readlink_bmap_ilocked xfs: assert locking precondŃ–tion in xfs_attr_list_int_ilocked xfs: fixup xfs_attr_get_ilocked
-rw-r--r--fs/iomap.c8
-rw-r--r--fs/xfs/libxfs/xfs_attr.c4
-rw-r--r--fs/xfs/libxfs/xfs_quota_defs.h2
-rw-r--r--fs/xfs/xfs_attr_list.c2
-rw-r--r--fs/xfs/xfs_dquot.c14
-rw-r--r--fs/xfs/xfs_symlink.c2
6 files changed, 15 insertions, 17 deletions
diff --git a/fs/iomap.c b/fs/iomap.c
index 173222863aca..039266128b7f 100644
--- a/fs/iomap.c
+++ b/fs/iomap.c
@@ -610,8 +610,8 @@ iomap_seek_hole(struct inode *inode, loff_t offset, const struct iomap_ops *ops)
loff_t length = size - offset;
loff_t ret;
- /* Nothing to be found beyond the end of the file. */
- if (offset >= size)
+ /* Nothing to be found before or beyond the end of the file. */
+ if (offset < 0 || offset >= size)
return -ENXIO;
while (length > 0) {
@@ -656,8 +656,8 @@ iomap_seek_data(struct inode *inode, loff_t offset, const struct iomap_ops *ops)
loff_t length = size - offset;
loff_t ret;
- /* Nothing to be found beyond the end of the file. */
- if (offset >= size)
+ /* Nothing to be found before or beyond the end of the file. */
+ if (offset < 0 || offset >= size)
return -ENXIO;
while (length > 0) {
diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
index ef8a1c75a467..de7b9bd30bec 100644
--- a/fs/xfs/libxfs/xfs_attr.c
+++ b/fs/xfs/libxfs/xfs_attr.c
@@ -114,12 +114,14 @@ xfs_inode_hasattr(
* Overall external interface routines.
*========================================================================*/
-/* Retrieve an extended attribute and its value. Must have iolock. */
+/* Retrieve an extended attribute and its value. Must have ilock. */
int
xfs_attr_get_ilocked(
struct xfs_inode *ip,
struct xfs_da_args *args)
{
+ ASSERT(xfs_isilocked(ip, XFS_ILOCK_SHARED | XFS_ILOCK_EXCL));
+
if (!xfs_inode_hasattr(ip))
return -ENOATTR;
else if (ip->i_d.di_aformat == XFS_DINODE_FMT_LOCAL)
diff --git a/fs/xfs/libxfs/xfs_quota_defs.h b/fs/xfs/libxfs/xfs_quota_defs.h
index 2834574cb6e7..d69c772271cb 100644
--- a/fs/xfs/libxfs/xfs_quota_defs.h
+++ b/fs/xfs/libxfs/xfs_quota_defs.h
@@ -136,8 +136,6 @@ typedef uint16_t xfs_qwarncnt_t;
*/
#define XFS_QMOPT_INHERIT 0x1000000
-#define XFS_QMOPT_NOLOCK 0x2000000 /* don't ilock during dqget */
-
/*
* flags to xfs_trans_mod_dquot.
*/
diff --git a/fs/xfs/xfs_attr_list.c b/fs/xfs/xfs_attr_list.c
index 545eca508d42..7740c8a5e736 100644
--- a/fs/xfs/xfs_attr_list.c
+++ b/fs/xfs/xfs_attr_list.c
@@ -463,6 +463,8 @@ xfs_attr_list_int_ilocked(
{
struct xfs_inode *dp = context->dp;
+ ASSERT(xfs_isilocked(dp, XFS_ILOCK_SHARED | XFS_ILOCK_EXCL));
+
/*
* Decide on what work routines to call based on the inode size.
*/
diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c
index f89f7b5241e6..fd2ef8c2c9a7 100644
--- a/fs/xfs/xfs_dquot.c
+++ b/fs/xfs/xfs_dquot.c
@@ -472,23 +472,18 @@ xfs_qm_dqtobp(
struct xfs_mount *mp = dqp->q_mount;
xfs_dqid_t id = be32_to_cpu(dqp->q_core.d_id);
struct xfs_trans *tp = (tpp ? *tpp : NULL);
- uint lock_mode = 0;
+ uint lock_mode;
quotip = xfs_quota_inode(dqp->q_mount, dqp->dq_flags);
dqp->q_fileoffset = (xfs_fileoff_t)id / mp->m_quotainfo->qi_dqperchunk;
- ASSERT(!(flags & XFS_QMOPT_NOLOCK) ||
- xfs_isilocked(quotip, XFS_ILOCK_SHARED) ||
- xfs_isilocked(quotip, XFS_ILOCK_EXCL));
- if (!(flags & XFS_QMOPT_NOLOCK))
- lock_mode = xfs_ilock_data_map_shared(quotip);
+ lock_mode = xfs_ilock_data_map_shared(quotip);
if (!xfs_this_quota_on(dqp->q_mount, dqp->dq_flags)) {
/*
* Return if this type of quotas is turned off while we
* didn't have the quota inode lock.
*/
- if (lock_mode)
- xfs_iunlock(quotip, lock_mode);
+ xfs_iunlock(quotip, lock_mode);
return -ESRCH;
}
@@ -498,8 +493,7 @@ xfs_qm_dqtobp(
error = xfs_bmapi_read(quotip, dqp->q_fileoffset,
XFS_DQUOT_CLUSTER_SIZE_FSB, &map, &nmaps, 0);
- if (lock_mode)
- xfs_iunlock(quotip, lock_mode);
+ xfs_iunlock(quotip, lock_mode);
if (error)
return error;
diff --git a/fs/xfs/xfs_symlink.c b/fs/xfs/xfs_symlink.c
index 12cd9cf7de41..23a50d7aa46a 100644
--- a/fs/xfs/xfs_symlink.c
+++ b/fs/xfs/xfs_symlink.c
@@ -61,6 +61,8 @@ xfs_readlink_bmap_ilocked(
int fsblocks = 0;
int offset;
+ ASSERT(xfs_isilocked(ip, XFS_ILOCK_SHARED | XFS_ILOCK_EXCL));
+
fsblocks = xfs_symlink_blocks(mp, pathlen);
error = xfs_bmapi_read(ip, 0, fsblocks, mval, &nmaps, 0);
if (error)