diff options
| author | Christian Schwarz <[email protected]> | 2020-11-02 21:07:07 +0100 |
|---|---|---|
| committer | GitHub <[email protected]> | 2020-11-02 12:07:07 -0800 |
| commit | ab8c935ea65e1a4d92311c9b84adc77047ba0b2f (patch) | |
| tree | 3d990fbeebf497d9379a83aea0f8cd7fbd5e2af9 /include/sys/zfs_vnops.h | |
| parent | 09eb36ce3d98e0eeaeec9c333ac818b2bc3f85bf (diff) | |
zfs_vnops: make zfs_get_data OS-independent
Move zfs_get_data() in to platform-independent code. The only
platform-specific aspect of it is the way we release an inode
(Linux) / vnode_t (FreeBSD). I am not aware of a platform that
could be supported by ZFS that couldn't implement zfs_rele_async
itself. It's sibling zvol_get_data already is platform-independent.
Reviewed-by: Ryan Moeller <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Signed-off-by: Christian Schwarz <[email protected]>
Closes #10979
Diffstat (limited to 'include/sys/zfs_vnops.h')
| -rw-r--r-- | include/sys/zfs_vnops.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/sys/zfs_vnops.h b/include/sys/zfs_vnops.h index b2767cb0e..5aaa64b34 100644 --- a/include/sys/zfs_vnops.h +++ b/include/sys/zfs_vnops.h @@ -39,4 +39,17 @@ extern int mappedread(znode_t *, int, uio_t *); extern int mappedread_sf(znode_t *, int, uio_t *); extern void update_pages(znode_t *, int64_t, int, objset_t *, uint64_t); +/* + * Platform code that asynchronously drops zp's inode / vnode_t. + * + * Asynchronous dropping ensures that the caller will never drop the + * last reference on an inode / vnode_t in the current context. + * Doing so while holding open a tx could result in a deadlock if + * the platform calls into filesystem again in the implementation + * of inode / vnode_t dropping (e.g. call from iput_final()). + */ +extern void zfs_zrele_async(znode_t *zp); + +extern zil_get_data_t zfs_get_data; + #endif |