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authorAl Viro <viro@zeniv.linux.org.uk>2016-01-22 15:40:57 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2016-01-22 18:04:28 -0500
commit5955102c9984fa081b2d570cfac75c97eecf8f3b (patch)
treea4744386eac4b916e847eb4eedfada158f6527b4 /mm/swapfile.c
parent57b8f112cfe6622ddddb8c2641206bb5fa8a112d (diff)
downloadlinux-5955102c9984fa081b2d570cfac75c97eecf8f3b.tar.bz2
wrappers for ->i_mutex access
parallel to mutex_{lock,unlock,trylock,is_locked,lock_nested}, inode_foo(inode) being mutex_foo(&inode->i_mutex). Please, use those for access to ->i_mutex; over the coming cycle ->i_mutex will become rwsem, with ->lookup() done with it held only shared. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'mm/swapfile.c')
-rw-r--r--mm/swapfile.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/mm/swapfile.c b/mm/swapfile.c
index c43f654a7b64..d2c37365e2d6 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -1956,9 +1956,9 @@ SYSCALL_DEFINE1(swapoff, const char __user *, specialfile)
set_blocksize(bdev, old_block_size);
blkdev_put(bdev, FMODE_READ | FMODE_WRITE | FMODE_EXCL);
} else {
- mutex_lock(&inode->i_mutex);
+ inode_lock(inode);
inode->i_flags &= ~S_SWAPFILE;
- mutex_unlock(&inode->i_mutex);
+ inode_unlock(inode);
}
filp_close(swap_file, NULL);
@@ -2183,7 +2183,7 @@ static int claim_swapfile(struct swap_info_struct *p, struct inode *inode)
p->flags |= SWP_BLKDEV;
} else if (S_ISREG(inode->i_mode)) {
p->bdev = inode->i_sb->s_bdev;
- mutex_lock(&inode->i_mutex);
+ inode_lock(inode);
if (IS_SWAPFILE(inode))
return -EBUSY;
} else
@@ -2416,7 +2416,7 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
mapping = swap_file->f_mapping;
inode = mapping->host;
- /* If S_ISREG(inode->i_mode) will do mutex_lock(&inode->i_mutex); */
+ /* If S_ISREG(inode->i_mode) will do inode_lock(inode); */
error = claim_swapfile(p, inode);
if (unlikely(error))
goto bad_swap;
@@ -2561,7 +2561,7 @@ bad_swap:
vfree(cluster_info);
if (swap_file) {
if (inode && S_ISREG(inode->i_mode)) {
- mutex_unlock(&inode->i_mutex);
+ inode_unlock(inode);
inode = NULL;
}
filp_close(swap_file, NULL);
@@ -2574,7 +2574,7 @@ out:
if (name)
putname(name);
if (inode && S_ISREG(inode->i_mode))
- mutex_unlock(&inode->i_mutex);
+ inode_unlock(inode);
return error;
}