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Fix zfs_open() to skip zil_async_to_sync() for the snapshot

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Fix zfs_open() to skip zil_async_to_sync() for the snapshot, as it won't
have any transactions. zfsvfs->z_log is NULL for the snapshot.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Signed-off-by: Jitendra Patidar <jitendra.patidar@nutanix.com>
Closes #18091
This commit is contained in:
Jitendra Patidar
2026-01-07 00:28:56 +05:30
committed by GitHub
parent c77f17b750
commit 2301755dfb
2 changed files with 6 additions and 4 deletions
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module/os/linux/zfs/zfs_vnops_os.c
+3 -2
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@@ -200,8 +200,9 @@ zfs_open(struct inode *ip, int mode, int flag, cred_t *cr)
* Keep a count of the synchronous opens in the znode. On first
* synchronous open we must convert all previous async transactions
* into sync to keep correct ordering.
* Skip it for snapshot, as it won't have any transactions.
*/
if (flag & O_SYNC) {
if (!zfsvfs->z_issnap && (flag & O_SYNC)) {
if (atomic_inc_32_nv(&zp->z_sync_cnt) == 1)
zil_async_to_sync(zfsvfs->z_log, zp->z_id);
}
@@ -222,7 +223,7 @@ zfs_close(struct inode *ip, int flag, cred_t *cr)
return (error);
/* Decrement the synchronous opens in the znode */
if (flag & O_SYNC)
if (!zfsvfs->z_issnap && (flag & O_SYNC))
atomic_dec_32(&zp->z_sync_cnt);
zfs_exit(zfsvfs, FTAG);