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linux/vfsops: remove zfs_mnt_t, pass directly

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A cleanup of opportunity. Since we already are modifying the contents of
zfs_mnt_t, we've broken any API guarantee, so we might as well go the
rest of the way and get rid of it, and just pass the osname and/or the
vfs_t directly.

It seems like zfs_mnt_t was never really needed anyway; it was added in
1c2555ef92 (March 2017) to minimise the difference to illumos, but
zfs_vfsops was made platform-specific anyway in 7b4e27232d.

We also remove setting SB_RDONLY on the caller's flags when failing a
read-write remount on a read-only snapshot or pool. Since 0f608aa6ca
the caller's flags have been a pointer back to fc->sb_flags, which are
discarded without further ceremony when the operation fails, so the
change is unnecessary and we can simplify the call further.

Sponsored-by: TrueNAS
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@truenas.com>
Closes #18377
This commit is contained in:
Rob Norris
2026-03-26 14:19:05 +11:00
committed by Tony Hutter
parent a8942fdb89
commit fc285caa84
3 changed files with 11 additions and 27 deletions
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module/os/linux/zfs/zpl_super.c
+3 -8
View File
@@ -880,13 +880,9 @@ zpl_get_tree(struct fs_context *fc)
vfs->vfs_do_readonly = B_TRUE;
}
zfs_mnt_t zm = {
.mnt_osname = fc->source,
.mnt_opts = vfs,
};
fstrans_cookie_t cookie = spl_fstrans_mark();
err = zfs_domount(sb, &zm, fc->sb_flags & SB_SILENT ? 1 : 0);
err = zfs_domount(sb, fc->source, vfs,
fc->sb_flags & SB_SILENT ? 1 : 0);
spl_fstrans_unmark(cookie);
if (err) {
@@ -921,12 +917,11 @@ zpl_get_tree(struct fs_context *fc)
static int
zpl_reconfigure(struct fs_context *fc)
{
zfs_mnt_t zm = { .mnt_osname = NULL, .mnt_opts = fc->fs_private };
fstrans_cookie_t cookie;
int error;
cookie = spl_fstrans_mark();
error = -zfs_remount(fc->root->d_sb, &fc->sb_flags, &zm);
error = -zfs_remount(fc->root->d_sb, fc->fs_private, fc->sb_flags);
spl_fstrans_unmark(cookie);
ASSERT3S(error, <=, 0);