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| author | Jeff Layton <jlayton@redhat.com> | 2010-10-28 13:33:38 -0400 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2010-11-02 19:15:09 +0000 |
| commit | 413e661c136c52290de1ee19a1b049a4da9dbf51 (patch) | |
| tree | cd875b7b3cab4c9df89b360734a2d55d220acd43 /fs | |
| parent | df098db12ada832c0232ee1f91eff21a8701889c (diff) | |
| download | blackbird-op-linux-413e661c136c52290de1ee19a1b049a4da9dbf51.tar.gz blackbird-op-linux-413e661c136c52290de1ee19a1b049a4da9dbf51.zip | |
cifs: store pointer to master tlink in superblock (try #2)
This is the second version of this patch, the only difference between
it and the first one is that this explicitly makes cifs_sb_master_tlink
a static inline.
Instead of keeping a tag on the master tlink in the tree, just keep a
pointer to the master in the superblock. That eliminates the need for
using the radix tree to look up a tagged entry.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/cifs/cifs_fs_sb.h | 2 | ||||
| -rw-r--r-- | fs/cifs/connect.c | 20 |
2 files changed, 5 insertions, 17 deletions
diff --git a/fs/cifs/cifs_fs_sb.h b/fs/cifs/cifs_fs_sb.h index 525ba59a4105..79576dac336f 100644 --- a/fs/cifs/cifs_fs_sb.h +++ b/fs/cifs/cifs_fs_sb.h @@ -43,8 +43,8 @@ struct cifs_sb_info { struct radix_tree_root tlink_tree; -#define CIFS_TLINK_MASTER_TAG 0 /* is "master" (mount) tcon */ spinlock_t tlink_tree_lock; + struct tcon_link *master_tlink; struct nls_table *local_nls; unsigned int rsize; unsigned int wsize; diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 9eb327defa1d..197ac579a70b 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -2914,11 +2914,11 @@ remote_path_check: spin_lock(&cifs_sb->tlink_tree_lock); radix_tree_insert(&cifs_sb->tlink_tree, pSesInfo->linux_uid, tlink); - radix_tree_tag_set(&cifs_sb->tlink_tree, pSesInfo->linux_uid, - CIFS_TLINK_MASTER_TAG); spin_unlock(&cifs_sb->tlink_tree_lock); radix_tree_preload_end(); + cifs_sb->master_tlink = tlink; + queue_delayed_work(system_nrt_wq, &cifs_sb->prune_tlinks, TLINK_IDLE_EXPIRE); @@ -3271,22 +3271,10 @@ out: return tcon; } -static struct tcon_link * +static inline struct tcon_link * cifs_sb_master_tlink(struct cifs_sb_info *cifs_sb) { - struct tcon_link *tlink; - unsigned int ret; - - spin_lock(&cifs_sb->tlink_tree_lock); - ret = radix_tree_gang_lookup_tag(&cifs_sb->tlink_tree, (void **)&tlink, - 0, 1, CIFS_TLINK_MASTER_TAG); - spin_unlock(&cifs_sb->tlink_tree_lock); - - /* the master tcon should always be present */ - if (ret == 0) - BUG(); - - return tlink; + return cifs_sb->master_tlink; } struct cifsTconInfo * |
