From 073c21416268658bd1bc573af85eeac2ebb56ed5 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 21 Oct 2010 15:53:15 +0200 Subject: [PATCH] BKL: remove BKL from qnx4 All uses of the BKL in qnx4 were the result of a pushdown into code that doesn't really need it. As Christoph points out, this is a read-only file system, which eliminates most of the races in readdir/lookup. Signed-off-by: Arnd Bergmann Acked-by: Anders Larsen Cc: Christoph Hellwig --- fs/qnx4/dir.c | 4 ---- fs/qnx4/inode.c | 14 +------------- fs/qnx4/namei.c | 4 ---- 3 files changed, 1 insertion(+), 21 deletions(-) diff --git a/fs/qnx4/dir.c b/fs/qnx4/dir.c index 6e8fc62b40a8..7b0329468a5d 100644 --- a/fs/qnx4/dir.c +++ b/fs/qnx4/dir.c @@ -11,7 +11,6 @@ * 20-06-1998 by Frank Denis : Linux 2.1.99+ & dcache support. */ -#include #include #include "qnx4.h" @@ -29,8 +28,6 @@ static int qnx4_readdir(struct file *filp, void *dirent, filldir_t filldir) QNX4DEBUG((KERN_INFO "qnx4_readdir:i_size = %ld\n", (long) inode->i_size)); QNX4DEBUG((KERN_INFO "filp->f_pos = %ld\n", (long) filp->f_pos)); - lock_kernel(); - while (filp->f_pos < inode->i_size) { blknum = qnx4_block_map( inode, filp->f_pos >> QNX4_BLOCK_SIZE_BITS ); bh = sb_bread(inode->i_sb, blknum); @@ -71,7 +68,6 @@ static int qnx4_readdir(struct file *filp, void *dirent, filldir_t filldir) brelse(bh); } out: - unlock_kernel(); return 0; } diff --git a/fs/qnx4/inode.c b/fs/qnx4/inode.c index 86a7be1399a8..01bad30026fc 100644 --- a/fs/qnx4/inode.c +++ b/fs/qnx4/inode.c @@ -16,7 +16,6 @@ #include #include #include -#include #include #include #include @@ -157,8 +156,6 @@ static int qnx4_statfs(struct dentry *dentry, struct kstatfs *buf) struct super_block *sb = dentry->d_sb; u64 id = huge_encode_dev(sb->s_bdev->bd_dev); - lock_kernel(); - buf->f_type = sb->s_magic; buf->f_bsize = sb->s_blocksize; buf->f_blocks = le32_to_cpu(qnx4_sb(sb)->BitMap->di_size) * 8; @@ -168,8 +165,6 @@ static int qnx4_statfs(struct dentry *dentry, struct kstatfs *buf) buf->f_fsid.val[0] = (u32)id; buf->f_fsid.val[1] = (u32)(id >> 32); - unlock_kernel(); - return 0; } @@ -234,13 +229,9 @@ static int qnx4_fill_super(struct super_block *s, void *data, int silent) struct qnx4_sb_info *qs; int ret = -EINVAL; - lock_kernel(); - qs = kzalloc(sizeof(struct qnx4_sb_info), GFP_KERNEL); - if (!qs) { - unlock_kernel(); + if (!qs) return -ENOMEM; - } s->s_fs_info = qs; sb_set_blocksize(s, QNX4_BLOCK_SIZE); @@ -287,8 +278,6 @@ static int qnx4_fill_super(struct super_block *s, void *data, int silent) goto outi; brelse(bh); - - unlock_kernel(); return 0; outi: @@ -298,7 +287,6 @@ static int qnx4_fill_super(struct super_block *s, void *data, int silent) outnobh: kfree(qs); s->s_fs_info = NULL; - unlock_kernel(); return ret; } diff --git a/fs/qnx4/namei.c b/fs/qnx4/namei.c index 58703ebba879..275327b5615e 100644 --- a/fs/qnx4/namei.c +++ b/fs/qnx4/namei.c @@ -12,7 +12,6 @@ * 04-07-1998 by Frank Denis : first step for rmdir/unlink. */ -#include #include #include "qnx4.h" @@ -109,7 +108,6 @@ struct dentry * qnx4_lookup(struct inode *dir, struct dentry *dentry, struct nam int len = dentry->d_name.len; struct inode *foundinode = NULL; - lock_kernel(); if (!(bh = qnx4_find_entry(len, dir, name, &de, &ino))) goto out; /* The entry is linked, let's get the real info */ @@ -123,13 +121,11 @@ struct dentry * qnx4_lookup(struct inode *dir, struct dentry *dentry, struct nam foundinode = qnx4_iget(dir->i_sb, ino); if (IS_ERR(foundinode)) { - unlock_kernel(); QNX4DEBUG((KERN_ERR "qnx4: lookup->iget -> error %ld\n", PTR_ERR(foundinode))); return ERR_CAST(foundinode); } out: - unlock_kernel(); d_add(dentry, foundinode); return NULL;