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authorYoshihisa Abe <yoshiabe@cs.cmu.edu>2010-10-25 02:03:45 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-25 08:02:40 -0700
commitf7cc02b8715618e179242ba9cc10bdc5146ae565 (patch)
tree80c1bcf6923c9982a52fbe510cb7d396fb9866fc /fs/coda/file.c
parentb5ce1d83a62fc109d8e815b1fc71dcdb0d26bc49 (diff)
downloadlinux-linaro-f7cc02b8715618e179242ba9cc10bdc5146ae565.tar.gz
Coda: push BKL regions into coda_upcall()
Now that shared inode state is locked using the cii->c_lock, the BKL is only used to protect the upcall queues used to communicate with the userspace cache manager. The remaining state is all local and we can push the lock further down into coda_upcall(). Signed-off-by: Yoshihisa Abe <yoshiabe@cs.cmu.edu> Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/coda/file.c')
-rw-r--r--fs/coda/file.c19
1 files changed, 3 insertions, 16 deletions
diff --git a/fs/coda/file.c b/fs/coda/file.c
index c4e395781d4..c8b50ba4366 100644
--- a/fs/coda/file.c
+++ b/fs/coda/file.c
@@ -15,7 +15,6 @@
#include <linux/stat.h>
#include <linux/cred.h>
#include <linux/errno.h>
-#include <linux/smp_lock.h>
#include <linux/spinlock.h>
#include <linux/string.h>
#include <linux/slab.h>
@@ -144,8 +143,6 @@ int coda_open(struct inode *coda_inode, struct file *coda_file)
if (!cfi)
return -ENOMEM;
- lock_kernel();
-
error = venus_open(coda_inode->i_sb, coda_i2f(coda_inode), coda_flags,
&host_file);
if (!host_file)
@@ -153,7 +150,6 @@ int coda_open(struct inode *coda_inode, struct file *coda_file)
if (error) {
kfree(cfi);
- unlock_kernel();
return error;
}
@@ -165,8 +161,6 @@ int coda_open(struct inode *coda_inode, struct file *coda_file)
BUG_ON(coda_file->private_data != NULL);
coda_file->private_data = cfi;
-
- unlock_kernel();
return 0;
}
@@ -177,9 +171,7 @@ int coda_release(struct inode *coda_inode, struct file *coda_file)
struct coda_file_info *cfi;
struct coda_inode_info *cii;
struct inode *host_inode;
- int err = 0;
-
- lock_kernel();
+ int err;
cfi = CODA_FTOC(coda_file);
BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
@@ -203,8 +195,6 @@ int coda_release(struct inode *coda_inode, struct file *coda_file)
kfree(coda_file->private_data);
coda_file->private_data = NULL;
- unlock_kernel();
-
/* VFS fput ignores the return value from file_operations->release, so
* there is no use returning an error here */
return 0;
@@ -215,7 +205,7 @@ int coda_fsync(struct file *coda_file, int datasync)
struct file *host_file;
struct inode *coda_inode = coda_file->f_path.dentry->d_inode;
struct coda_file_info *cfi;
- int err = 0;
+ int err;
if (!(S_ISREG(coda_inode->i_mode) || S_ISDIR(coda_inode->i_mode) ||
S_ISLNK(coda_inode->i_mode)))
@@ -226,11 +216,8 @@ int coda_fsync(struct file *coda_file, int datasync)
host_file = cfi->cfi_container;
err = vfs_fsync(host_file, datasync);
- if ( !err && !datasync ) {
- lock_kernel();
+ if (!err && !datasync)
err = venus_fsync(coda_inode->i_sb, coda_i2f(coda_inode));
- unlock_kernel();
- }
return err;
}