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authorDave Chinner <dchinner@redhat.com>2021-08-18 18:46:52 -0700
committerDarrick J. Wong <djwong@kernel.org>2021-08-19 10:07:13 -0700
commit2e973b2cd4cdb993be94cca4c33f532f1ed05316 (patch)
treeb44d08a1f5af0ef6be12f8b178975de8ac5bef92 /fs/xfs/xfs_mount.c
parent0560f31a09e523090d1ab2bfe21c69d028c2bdf2 (diff)
xfs: convert remaining mount flags to state flags
The remaining mount flags kept in m_flags are actually runtime state flags. These change dynamically, so they really should be updated atomically so we don't potentially lose an update due to racing modifications. Convert these remaining flags to be stored in m_opstate and use atomic bitops to set and clear the flags. This also adds a couple of simple wrappers for common state checks - read only and shutdown. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Diffstat (limited to 'fs/xfs/xfs_mount.c')
-rw-r--r--fs/xfs/xfs_mount.c15
1 files changed, 7 insertions, 8 deletions
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index 8d7dc0423764..835a78c4c435 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -488,7 +488,7 @@ xfs_check_summary_counts(
* counters. If any of them are obviously incorrect, we can recompute
* them from the AGF headers in the next step.
*/
- if (XFS_LAST_UNMOUNT_WAS_CLEAN(mp) &&
+ if (xfs_is_clean(mp) &&
(mp->m_sb.sb_fdblocks > mp->m_sb.sb_dblocks ||
!xfs_verify_icount(mp, mp->m_sb.sb_icount) ||
mp->m_sb.sb_ifree > mp->m_sb.sb_icount))
@@ -505,8 +505,7 @@ xfs_check_summary_counts(
* superblock to be correct and we don't need to do anything here.
* Otherwise, recalculate the summary counters.
*/
- if ((!xfs_has_lazysbcount(mp) ||
- XFS_LAST_UNMOUNT_WAS_CLEAN(mp)) &&
+ if ((!xfs_has_lazysbcount(mp) || xfs_is_clean(mp)) &&
!xfs_fs_has_sickness(mp, XFS_SICK_FS_COUNTERS))
return 0;
@@ -547,7 +546,7 @@ xfs_unmount_flush_inodes(
xfs_extent_busy_wait_all(mp);
flush_workqueue(xfs_discard_wq);
- mp->m_flags |= XFS_MOUNT_UNMOUNTING;
+ set_bit(XFS_OPSTATE_UNMOUNTING, &mp->m_opstate);
xfs_ail_push_all_sync(mp->m_ail);
xfs_inodegc_stop(mp);
@@ -835,7 +834,7 @@ xfs_mountfs(
* the next remount into writeable mode. Otherwise we would never
* perform the update e.g. for the root filesystem.
*/
- if (mp->m_update_sb && !(mp->m_flags & XFS_MOUNT_RDONLY)) {
+ if (mp->m_update_sb && !xfs_is_readonly(mp)) {
error = xfs_sync_sb(mp, false);
if (error) {
xfs_warn(mp, "failed to write sb changes");
@@ -892,7 +891,7 @@ xfs_mountfs(
* We use the same quiesce mechanism as the rw->ro remount, as they are
* semantically identical operations.
*/
- if ((mp->m_flags & XFS_MOUNT_RDONLY) && !xfs_has_norecovery(mp))
+ if (xfs_is_readonly(mp) && !xfs_has_norecovery(mp))
xfs_log_clean(mp);
/*
@@ -916,7 +915,7 @@ xfs_mountfs(
* This may drive us straight to ENOSPC on mount, but that implies
* we were already there on the last unmount. Warn if this occurs.
*/
- if (!(mp->m_flags & XFS_MOUNT_RDONLY)) {
+ if (!xfs_is_readonly(mp)) {
resblks = xfs_default_resblks(mp);
error = xfs_reserve_blocks(mp, &resblks, NULL);
if (error)
@@ -1077,7 +1076,7 @@ xfs_fs_writable(
{
ASSERT(level > SB_UNFROZEN);
if ((mp->m_super->s_writers.frozen >= level) ||
- XFS_FORCED_SHUTDOWN(mp) || (mp->m_flags & XFS_MOUNT_RDONLY))
+ XFS_FORCED_SHUTDOWN(mp) || xfs_is_readonly(mp))
return false;
return true;