c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2026-05-22 02:27:36 +03:00
Code Issues Packages Projects Releases Wiki Activity

zfs_enter rework

Browse Source 
Replace ZFS_ENTER and ZFS_VERIFY_ZP, which have hidden returns, with
functions that return error code. The reason we want to do this is
because hidden returns are not obvious and had caused some missing fail
path unwinding.

This patch changes the common, linux, and freebsd parts. Also fixes
fail path unwinding in zfs_fsync, zpl_fsync, zpl_xattr_{list,get,set}, and
zfs_lookup().

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Chunwei Chen <david.chen@nutanix.com>
Closes #13831
This commit is contained in:
Chunwei Chen
2022-09-16 13:36:47 -07:00
committed by GitHub
parent b24d1c77f7
commit 768eacedef
15 changed files with 591 additions and 486 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/sys/zfs_znode.h
+23
View File
@@ -218,6 +218,29 @@ typedef struct znode {
ZNODE_OS_FIELDS;
} znode_t;
/* Verifies the znode is valid. */
static inline int
zfs_verify_zp(znode_t *zp)
{
if (unlikely(zp->z_sa_hdl == NULL))
return (SET_ERROR(EIO));
return (0);
}
/* zfs_enter and zfs_verify_zp together */
static inline int
zfs_enter_verify_zp(zfsvfs_t *zfsvfs, znode_t *zp, const char *tag)
{
int error;
if ((error = zfs_enter(zfsvfs, tag)) != 0)
return (error);
if ((error = zfs_verify_zp(zp)) != 0) {
zfs_exit(zfsvfs, tag);
return (error);
}
return (0);
}
typedef struct znode_hold {
uint64_t zh_obj; /* object id */
kmutex_t zh_lock; /* lock serializing object access */