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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2013-09-04 16:08:54 +0200 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2013-09-04 18:26:32 +0200 |
| commit | f6de7a39c181dfb8a2c534661a53c73afb3081cd (patch) | |
| tree | 69a0d52d55f0a32e83bba6a0cd20df154a38f06a /fs | |
| parent | NFSv4: Don't try to recover NFSv4 locks when they are lost. (diff) | |
| download | linux-f6de7a39c181dfb8a2c534661a53c73afb3081cd.tar.xz linux-f6de7a39c181dfb8a2c534661a53c73afb3081cd.zip | |
NFSv4: Document the recover_lost_locks kernel parameter
Rename the new 'recover_locks' kernel parameter to 'recover_lost_locks'
and change the default to 'false'. Document why in
Documentation/kernel-parameters.txt
Move the 'recover_lost_locks' kernel parameter to fs/nfs/super.c to
make it easy to backport to kernels prior to 3.6.x, which don't have
a separate NFSv4 module.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/nfs/nfs4_fs.h | 1 | ||||
| -rw-r--r-- | fs/nfs/nfs4proc.c | 8 | ||||
| -rw-r--r-- | fs/nfs/super.c | 8 |
3 files changed, 10 insertions, 7 deletions
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 64118316a407..277407df6d47 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -372,6 +372,7 @@ struct dentry *nfs4_try_mount(int, const char *, struct nfs_mount_info *, struct extern bool nfs4_disable_idmapping; extern unsigned short max_session_slots; extern unsigned short send_implementation_id; +extern bool recover_lost_locks; #define NFS4_CLIENT_ID_UNIQ_LEN (64) extern char nfs4_client_id_uniquifier[NFS4_CLIENT_ID_UNIQ_LEN]; diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 1eb694e0f305..535011a27415 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -5523,12 +5523,6 @@ static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request return err; } -bool recover_locks = true; -module_param(recover_locks, bool, 0644); -MODULE_PARM_DESC(recover_locks, - "If the server reports that a lock might be lost, " - "try to recovery it risking corruption."); - static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) { struct nfs_server *server = NFS_SERVER(state->inode); @@ -5540,7 +5534,7 @@ static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request err = nfs4_set_lock_state(state, request); if (err != 0) return err; - if (!recover_locks) { + if (!recover_lost_locks) { set_bit(NFS_LOCK_LOST, &request->fl_u.nfs4_fl.owner->ls_flags); return 0; } diff --git a/fs/nfs/super.c b/fs/nfs/super.c index f2071d221c77..6ad9053d8906 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -2758,6 +2758,7 @@ bool nfs4_disable_idmapping = true; unsigned short max_session_slots = NFS4_DEF_SLOT_TABLE_SIZE; unsigned short send_implementation_id = 1; char nfs4_client_id_uniquifier[NFS4_CLIENT_ID_UNIQ_LEN] = ""; +bool recover_lost_locks = false; EXPORT_SYMBOL_GPL(nfs_callback_set_tcpport); EXPORT_SYMBOL_GPL(nfs_callback_tcpport); @@ -2766,6 +2767,7 @@ EXPORT_SYMBOL_GPL(nfs4_disable_idmapping); EXPORT_SYMBOL_GPL(max_session_slots); EXPORT_SYMBOL_GPL(send_implementation_id); EXPORT_SYMBOL_GPL(nfs4_client_id_uniquifier); +EXPORT_SYMBOL_GPL(recover_lost_locks); #define NFS_CALLBACK_MAXPORTNR (65535U) @@ -2803,4 +2805,10 @@ MODULE_PARM_DESC(send_implementation_id, "Send implementation ID with NFSv4.1 exchange_id"); MODULE_PARM_DESC(nfs4_unique_id, "nfs_client_id4 uniquifier string"); +module_param(recover_lost_locks, bool, 0644); +MODULE_PARM_DESC(recover_lost_locks, + "If the server reports that a lock might be lost, " + "try to recover it risking data corruption."); + + #endif /* CONFIG_NFS_V4 */ |