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authorArnd Bergmann <arnd@arndb.de>2011-01-22 20:05:05 +0100
committerArnd Bergmann <arnd@arndb.de>2011-03-02 00:02:38 +0100
commit4688a066ecf60086ea82f68edb3b036b567d2c08 (patch)
treee1a4b93e5b5084adfbf78c83de32dc590959fe14 /fs/adfs/dir.c
parentf5412be599602124d2bdd49947b231dd77c0bf99 (diff)
downloadop-kernel-dev-4688a066ecf60086ea82f68edb3b036b567d2c08.zip
op-kernel-dev-4688a066ecf60086ea82f68edb3b036b567d2c08.tar.gz
adfs: remove the big kernel lock
According to Russell King, adfs was written to not require the big kernel lock, and all inode updates are done under adfs_dir_lock. All other metadata in adfs is read-only and does not require locking. The use of the BKL is the result of various pushdowns from the VFS operations. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Russell King <rmk@arm.linux.org.uk> Cc: Stuart Swales <stuart.swales.croftnuisk@gmail.com>
Diffstat (limited to 'fs/adfs/dir.c')
-rw-r--r--fs/adfs/dir.c6
1 files changed, 0 insertions, 6 deletions
diff --git a/fs/adfs/dir.c b/fs/adfs/dir.c
index 3b4a764..3d83075a 100644
--- a/fs/adfs/dir.c
+++ b/fs/adfs/dir.c
@@ -9,7 +9,6 @@
*
* Common directory handling for ADFS
*/
-#include <linux/smp_lock.h>
#include "adfs.h"
/*
@@ -27,8 +26,6 @@ adfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
struct adfs_dir dir;
int ret = 0;
- lock_kernel();
-
if (filp->f_pos >> 32)
goto out;
@@ -70,7 +67,6 @@ free_out:
ops->free(&dir);
out:
- unlock_kernel();
return ret;
}
@@ -276,7 +272,6 @@ adfs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
struct object_info obj;
int error;
- lock_kernel();
error = adfs_dir_lookup_byname(dir, &dentry->d_name, &obj);
if (error == 0) {
error = -EACCES;
@@ -288,7 +283,6 @@ adfs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
if (inode)
error = 0;
}
- unlock_kernel();
d_add(dentry, inode);
return ERR_PTR(error);
}
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