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authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-16 23:04:02 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-16 23:04:02 +0300
commitbac5e54c29f352d962a2447d22735316b347b9f1 (patch)
tree7642993fa93164835ffaa2dacd341388193f1979 /fs/pipe.c
parent529e89430d6c0d64db8ac474cb95e68e2527c79a (diff)
parentc05c4edd876b7ae92787d1295868afcb89b6a348 (diff)
downloadlinux-bac5e54c29f352d962a2447d22735316b347b9f1.tar.xz
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (38 commits) direct I/O fallback sync simplification ocfs: stop using do_sync_mapping_range cleanup blockdev_direct_IO locking make generic_acl slightly more generic sanitize xattr handler prototypes libfs: move EXPORT_SYMBOL for d_alloc_name vfs: force reval of target when following LAST_BIND symlinks (try #7) ima: limit imbalance msg Untangling ima mess, part 3: kill dead code in ima Untangling ima mess, part 2: deal with counters Untangling ima mess, part 1: alloc_file() O_TRUNC open shouldn't fail after file truncation ima: call ima_inode_free ima_inode_free IMA: clean up the IMA counts updating code ima: only insert at inode creation time ima: valid return code from ima_inode_alloc fs: move get_empty_filp() deffinition to internal.h Sanitize exec_permission_lite() Kill cached_lookup() and real_lookup() Kill path_lookup_open() ... Trivial conflicts in fs/direct-io.c
Diffstat (limited to 'fs/pipe.c')
-rw-r--r--fs/pipe.c29
1 files changed, 12 insertions, 17 deletions
diff --git a/fs/pipe.c b/fs/pipe.c
index ae17d026aaa3..43d79da5c57e 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -974,7 +974,7 @@ struct file *create_write_pipe(int flags)
int err;
struct inode *inode;
struct file *f;
- struct dentry *dentry;
+ struct path path;
struct qstr name = { .name = "" };
err = -ENFILE;
@@ -983,21 +983,22 @@ struct file *create_write_pipe(int flags)
goto err;
err = -ENOMEM;
- dentry = d_alloc(pipe_mnt->mnt_sb->s_root, &name);
- if (!dentry)
+ path.dentry = d_alloc(pipe_mnt->mnt_sb->s_root, &name);
+ if (!path.dentry)
goto err_inode;
+ path.mnt = mntget(pipe_mnt);
- dentry->d_op = &pipefs_dentry_operations;
+ path.dentry->d_op = &pipefs_dentry_operations;
/*
* We dont want to publish this dentry into global dentry hash table.
* We pretend dentry is already hashed, by unsetting DCACHE_UNHASHED
* This permits a working /proc/$pid/fd/XXX on pipes
*/
- dentry->d_flags &= ~DCACHE_UNHASHED;
- d_instantiate(dentry, inode);
+ path.dentry->d_flags &= ~DCACHE_UNHASHED;
+ d_instantiate(path.dentry, inode);
err = -ENFILE;
- f = alloc_file(pipe_mnt, dentry, FMODE_WRITE, &write_pipefifo_fops);
+ f = alloc_file(&path, FMODE_WRITE, &write_pipefifo_fops);
if (!f)
goto err_dentry;
f->f_mapping = inode->i_mapping;
@@ -1009,7 +1010,7 @@ struct file *create_write_pipe(int flags)
err_dentry:
free_pipe_info(inode);
- dput(dentry);
+ path_put(&path);
return ERR_PTR(err);
err_inode:
@@ -1028,20 +1029,14 @@ void free_write_pipe(struct file *f)
struct file *create_read_pipe(struct file *wrf, int flags)
{
- struct file *f = get_empty_filp();
+ /* Grab pipe from the writer */
+ struct file *f = alloc_file(&wrf->f_path, FMODE_READ,
+ &read_pipefifo_fops);
if (!f)
return ERR_PTR(-ENFILE);
- /* Grab pipe from the writer */
- f->f_path = wrf->f_path;
path_get(&wrf->f_path);
- f->f_mapping = wrf->f_path.dentry->d_inode->i_mapping;
-
- f->f_pos = 0;
f->f_flags = O_RDONLY | (flags & O_NONBLOCK);
- f->f_op = &read_pipefifo_fops;
- f->f_mode = FMODE_READ;
- f->f_version = 0;
return f;
}