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| author |   Al Viro <viro@zeniv.linux.org.uk> | 2013-10-01 16:18:06 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2013-10-24 23:35:01 -0400 |
| commit | 94e92a6e772e009e27083a7f42d49a179e5f668c (patch) | |
| tree | 9f2231e69bbed91b459a4d6207ff89714603983c | |
| parent | split __lookup_mnt() in two functions (diff) | |
| download | linux-dev-94e92a6e772e009e27083a7f42d49a179e5f668c.tar.xz linux-dev-94e92a6e772e009e27083a7f42d49a179e5f668c.zip | |
move taking vfsmount_lock down into prepend_path()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/dcache.c | 11 |
1 files changed, 2 insertions, 9 deletions
diff --git a/fs/dcache.c b/fs/dcache.c index 41000305d716..d888223a5486 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -2889,6 +2889,7 @@ static int prepend_path(const struct path *path, char *bptr; int blen; + br_read_lock(&vfsmount_lock); rcu_read_lock(); restart: bptr = *buffer; @@ -2935,6 +2936,7 @@ restart: goto restart; } done_seqretry(&rename_lock, seq); + br_read_unlock(&vfsmount_lock); if (error >= 0 && bptr == *buffer) { if (--blen < 0) @@ -2971,9 +2973,7 @@ char *__d_path(const struct path *path, int error; prepend(&res, &buflen, "\0", 1); - br_read_lock(&vfsmount_lock); error = prepend_path(path, root, &res, &buflen); - br_read_unlock(&vfsmount_lock); if (error < 0) return ERR_PTR(error); @@ -2990,9 +2990,7 @@ char *d_absolute_path(const struct path *path, int error; prepend(&res, &buflen, "\0", 1); - br_read_lock(&vfsmount_lock); error = prepend_path(path, &root, &res, &buflen); - br_read_unlock(&vfsmount_lock); if (error > 1) error = -EINVAL; @@ -3067,9 +3065,7 @@ char *d_path(const struct path *path, char *buf, int buflen) rcu_read_lock(); get_fs_root_rcu(current->fs, &root); - br_read_lock(&vfsmount_lock); error = path_with_deleted(path, &root, &res, &buflen); - br_read_unlock(&vfsmount_lock); rcu_read_unlock(); if (error < 0) @@ -3224,7 +3220,6 @@ SYSCALL_DEFINE2(getcwd, char __user *, buf, unsigned long, size) get_fs_root_and_pwd_rcu(current->fs, &root, &pwd); error = -ENOENT; - br_read_lock(&vfsmount_lock); if (!d_unlinked(pwd.dentry)) { unsigned long len; char *cwd = page + PATH_MAX; @@ -3232,7 +3227,6 @@ SYSCALL_DEFINE2(getcwd, char __user *, buf, unsigned long, size) prepend(&cwd, &buflen, "\0", 1); error = prepend_path(&pwd, &root, &cwd, &buflen); - br_read_unlock(&vfsmount_lock); rcu_read_unlock(); if (error < 0) @@ -3253,7 +3247,6 @@ SYSCALL_DEFINE2(getcwd, char __user *, buf, unsigned long, size) error = -EFAULT; } } else { - br_read_unlock(&vfsmount_lock); rcu_read_unlock(); } |