AcoSail/kernel_optimize_test
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NFS: Remove BKL from the symlink code

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Page cache accesses are serialised using page locks, whereas attribute
updates are serialised using inode->i_lock.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2008-06-11 15:44:22 -04:00
parent 52e2e8d37e
commit 76566991f9
1 changed files with 1 additions and 7 deletions
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8
fs/nfs/dir.c
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@ -1482,13 +1482,9 @@ static int nfs_symlink(struct inode *dir, struct dentry *dentry, const char *sym
attr.ia_mode = S_IFLNK | S_IRWXUGO;
attr.ia_valid = ATTR_MODE;
lock_kernel();
page = alloc_page(GFP_HIGHUSER);
if (!page) {
unlock_kernel();
if (!page)
return -ENOMEM;
}
kaddr = kmap_atomic(page, KM_USER0);
memcpy(kaddr, symname, pathlen);
@ -1503,7 +1499,6 @@ static int nfs_symlink(struct inode *dir, struct dentry *dentry, const char *sym
dentry->d_name.name, symname, error);
d_drop(dentry);
__free_page(page);
unlock_kernel();
return error;
}
@ -1521,7 +1516,6 @@ static int nfs_symlink(struct inode *dir, struct dentry *dentry, const char *sym
} else
__free_page(page);
unlock_kernel();
return 0;
}