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ceph: apply nearfull_sync option on remount

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ceph_parse_mount_param() stores nearfull_sync / nonearfull_sync on the
temporary fs_context options, but ceph_reconfigure_fc() never copied
CEPH_MOUNT_OPT_NEARFULL_SYNC onto the live mount. Remount therefore
succeeded while writes and /proc/mounts kept the original-mount flag.

Apply the flag the same way as ASYNC_DIROPS and SPARSEREAD so remount
can enable or disable NEARFULL IOCB_DSYNC promotion.

Fixes: c7a12c20bfba ("ceph: make nearfull sync writes opt-in")
Signed-off-by: Alex Markuze <amarkuze@redhat.com>
Reviewed-by: Xiubo Li <xiubo.li@clyso.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Alex Markuze 2026-08-27 15:16:21 +00:00 committed by Ilya Dryomov
parent f75987e543
commit dc173b3741
1 changed files with 5 additions and 0 deletions
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5
fs/ceph/super.c
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@ -1420,6 +1420,11 @@ static int ceph_reconfigure_fc(struct fs_context *fc)
else
ceph_clear_mount_opt(fsc, SPARSEREAD);
if (fsopt->flags & CEPH_MOUNT_OPT_NEARFULL_SYNC)
ceph_set_mount_opt(fsc, NEARFULL_SYNC);
else
ceph_clear_mount_opt(fsc, NEARFULL_SYNC);
if (strcmp_null(fsc->mount_options->mon_addr, fsopt->mon_addr)) {
kfree(fsc->mount_options->mon_addr);
fsc->mount_options->mon_addr = fsopt->mon_addr;