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Diffstat (limited to 'fs/xfs/xfs_mount.c')
-rw-r--r--fs/xfs/xfs_mount.c54
1 files changed, 31 insertions, 23 deletions
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index c0b1c2906880..10dbf203c62f 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -24,14 +24,12 @@
#include "xfs_trans.h"
#include "xfs_sb.h"
#include "xfs_ag.h"
-#include "xfs_dir.h"
#include "xfs_dir2.h"
#include "xfs_dmapi.h"
#include "xfs_mount.h"
#include "xfs_bmap_btree.h"
#include "xfs_alloc_btree.h"
#include "xfs_ialloc_btree.h"
-#include "xfs_dir_sf.h"
#include "xfs_dir2_sf.h"
#include "xfs_attr_sf.h"
#include "xfs_dinode.h"
@@ -196,7 +194,7 @@ xfs_mount_free(
kmem_free(mp->m_logname, strlen(mp->m_logname) + 1);
if (remove_bhv) {
- struct vfs *vfsp = XFS_MTOVFS(mp);
+ struct bhv_vfs *vfsp = XFS_MTOVFS(mp);
bhv_remove_all_vfsops(vfsp, 0);
VFS_REMOVEBHV(vfsp, &mp->m_bhv);
@@ -337,7 +335,7 @@ xfs_mount_validate_sb(
xfs_agnumber_t
xfs_initialize_perag(
- struct vfs *vfs,
+ bhv_vfs_t *vfs,
xfs_mount_t *mp,
xfs_agnumber_t agcount)
{
@@ -651,14 +649,14 @@ xfs_mount_common(xfs_mount_t *mp, xfs_sb_t *sbp)
*/
int
xfs_mountfs(
- vfs_t *vfsp,
+ bhv_vfs_t *vfsp,
xfs_mount_t *mp,
int mfsi_flags)
{
xfs_buf_t *bp;
xfs_sb_t *sbp = &(mp->m_sb);
xfs_inode_t *rip;
- vnode_t *rvp = NULL;
+ bhv_vnode_t *rvp = NULL;
int readio_log, writeio_log;
xfs_daddr_t d;
__uint64_t ret64;
@@ -934,18 +932,7 @@ xfs_mountfs(
vfsp->vfs_altfsid = (xfs_fsid_t *)mp->m_fixedfsid;
mp->m_dmevmask = 0; /* not persistent; set after each mount */
- /*
- * Select the right directory manager.
- */
- mp->m_dirops =
- XFS_SB_VERSION_HASDIRV2(&mp->m_sb) ?
- xfsv2_dirops :
- xfsv1_dirops;
-
- /*
- * Initialize directory manager's entries.
- */
- XFS_DIR_MOUNT(mp);
+ xfs_dir_mount(mp);
/*
* Initialize the attribute manager's entries.
@@ -1006,8 +993,9 @@ xfs_mountfs(
if (unlikely((rip->i_d.di_mode & S_IFMT) != S_IFDIR)) {
cmn_err(CE_WARN, "XFS: corrupted root inode");
- prdev("Root inode %llu is not a directory",
- mp->m_ddev_targp, (unsigned long long)rip->i_ino);
+ cmn_err(CE_WARN, "Device %s - root %llu is not a directory",
+ XFS_BUFTARG_NAME(mp->m_ddev_targp),
+ (unsigned long long)rip->i_ino);
xfs_iunlock(rip, XFS_ILOCK_EXCL);
XFS_ERROR_REPORT("xfs_mountfs_int(2)", XFS_ERRLEVEL_LOW,
mp);
@@ -1094,7 +1082,7 @@ xfs_mountfs(
int
xfs_unmountfs(xfs_mount_t *mp, struct cred *cr)
{
- struct vfs *vfsp = XFS_MTOVFS(mp);
+ struct bhv_vfs *vfsp = XFS_MTOVFS(mp);
#if defined(DEBUG) || defined(INDUCE_IO_ERROR)
int64_t fsid;
#endif
@@ -1254,6 +1242,26 @@ xfs_mod_sb(xfs_trans_t *tp, __int64_t fields)
xfs_trans_log_buf(tp, bp, first, last);
}
+
+/*
+ * In order to avoid ENOSPC-related deadlock caused by
+ * out-of-order locking of AGF buffer (PV 947395), we place
+ * constraints on the relationship among actual allocations for
+ * data blocks, freelist blocks, and potential file data bmap
+ * btree blocks. However, these restrictions may result in no
+ * actual space allocated for a delayed extent, for example, a data
+ * block in a certain AG is allocated but there is no additional
+ * block for the additional bmap btree block due to a split of the
+ * bmap btree of the file. The result of this may lead to an
+ * infinite loop in xfssyncd when the file gets flushed to disk and
+ * all delayed extents need to be actually allocated. To get around
+ * this, we explicitly set aside a few blocks which will not be
+ * reserved in delayed allocation. Considering the minimum number of
+ * needed freelist blocks is 4 fsbs, a potential split of file's bmap
+ * btree requires 1 fsb, so we set the number of set-aside blocks to 8.
+*/
+#define SET_ASIDE_BLOCKS 8
+
/*
* xfs_mod_incore_sb_unlocked() is a utility routine common used to apply
* a delta to a specified field in the in-core superblock. Simply
@@ -1298,7 +1306,7 @@ xfs_mod_incore_sb_unlocked(xfs_mount_t *mp, xfs_sb_field_t field,
return 0;
case XFS_SBS_FDBLOCKS:
- lcounter = (long long)mp->m_sb.sb_fdblocks;
+ lcounter = (long long)mp->m_sb.sb_fdblocks - SET_ASIDE_BLOCKS;
res_used = (long long)(mp->m_resblks - mp->m_resblks_avail);
if (delta > 0) { /* Putting blocks back */
@@ -1332,7 +1340,7 @@ xfs_mod_incore_sb_unlocked(xfs_mount_t *mp, xfs_sb_field_t field,
}
}
- mp->m_sb.sb_fdblocks = lcounter;
+ mp->m_sb.sb_fdblocks = lcounter + SET_ASIDE_BLOCKS;
return 0;
case XFS_SBS_FREXTENTS:
lcounter = (long long)mp->m_sb.sb_frextents;