From: Jeff Layton <jlayton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn@public.gmane.org
Cc: linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-nfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
michael.brantley-Iq/kdjr4a97QT0dZR+AlfA@public.gmane.org,
hch-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org,
miklos-sUDqSbJrdHQHWmgEVkV9KA@public.gmane.org,
pstaubach-83r9SdEf25FBDgjK7y7TUQ@public.gmane.org
Subject: [PATCH v8 10/32] vfs: make rmdir retry on ESTALE errors
Date: Sat, 27 Oct 2012 08:33:17 -0400 [thread overview]
Message-ID: <1351341219-17837-11-git-send-email-jlayton@redhat.com> (raw)
In-Reply-To: <1351341219-17837-1-git-send-email-jlayton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Signed-off-by: Jeff Layton <jlayton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
---
fs/namei.c | 81 ++++++++++++++++++++++++++++++++++----------------------------
1 file changed, 44 insertions(+), 37 deletions(-)
diff --git a/fs/namei.c b/fs/namei.c
index 47b6016..7c9bb50 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -3344,49 +3344,56 @@ static long do_rmdir(int dfd, const char __user *pathname)
struct filename *name;
struct dentry *dentry;
struct nameidata nd;
+ unsigned int try = 0;
+ unsigned int lookup_flags = LOOKUP_PARENT;
- name = user_path_parent(dfd, pathname, &nd, 0);
- if (IS_ERR(name))
- return PTR_ERR(name);
-
- switch(nd.last_type) {
- case LAST_DOTDOT:
- error = -ENOTEMPTY;
- goto exit1;
- case LAST_DOT:
- error = -EINVAL;
- goto exit1;
- case LAST_ROOT:
- error = -EBUSY;
- goto exit1;
- }
+ do {
+ name = user_path_parent(dfd, pathname, &nd, try);
+ if (IS_ERR(name))
+ return PTR_ERR(name);
+
+ switch (nd.last_type) {
+ case LAST_DOTDOT:
+ error = -ENOTEMPTY;
+ goto exit1;
+ case LAST_DOT:
+ error = -EINVAL;
+ goto exit1;
+ case LAST_ROOT:
+ error = -EBUSY;
+ goto exit1;
+ }
- nd.flags &= ~LOOKUP_PARENT;
- error = mnt_want_write(nd.path.mnt);
- if (error)
- goto exit1;
+ nd.flags &= ~LOOKUP_PARENT;
+ error = mnt_want_write(nd.path.mnt);
+ if (error)
+ goto exit1;
- mutex_lock_nested(&nd.path.dentry->d_inode->i_mutex, I_MUTEX_PARENT);
- dentry = lookup_hash(&nd);
- error = PTR_ERR(dentry);
- if (IS_ERR(dentry))
- goto exit2;
- if (!dentry->d_inode) {
- error = -ENOENT;
- goto exit3;
- }
- error = security_path_rmdir(&nd.path, dentry);
- if (error)
- goto exit3;
- error = vfs_rmdir(nd.path.dentry->d_inode, dentry);
+ mutex_lock_nested(&nd.path.dentry->d_inode->i_mutex,
+ I_MUTEX_PARENT);
+ dentry = lookup_hash(&nd);
+ if (IS_ERR(dentry)) {
+ error = PTR_ERR(dentry);
+ goto exit2;
+ }
+ if (!dentry->d_inode) {
+ error = -ENOENT;
+ goto exit3;
+ }
+ error = security_path_rmdir(&nd.path, dentry);
+ if (error)
+ goto exit3;
+ error = vfs_rmdir(nd.path.dentry->d_inode, dentry);
exit3:
- dput(dentry);
+ dput(dentry);
exit2:
- mutex_unlock(&nd.path.dentry->d_inode->i_mutex);
- mnt_drop_write(nd.path.mnt);
+ mutex_unlock(&nd.path.dentry->d_inode->i_mutex);
+ mnt_drop_write(nd.path.mnt);
exit1:
- path_put(&nd.path);
- putname(name);
+ path_put(&nd.path);
+ lookup_flags |= LOOKUP_REVAL;
+ putname(name);
+ } while (retry_estale(error, try++));
return error;
}
--
1.7.11.7
--
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next prev parent reply other threads:[~2012-10-27 12:33 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-27 12:33 [PATCH v8 00/32] vfs: add the ability to retry lookup and operation to most path-based syscalls Jeff Layton
2012-10-27 12:33 ` [PATCH v8 01/32] vfs: add a retry_estale helper function to handle retries on ESTALE Jeff Layton
2012-10-27 12:33 ` [PATCH v8 02/32] vfs: make fstatat retry on ESTALE errors from getattr call Jeff Layton
2012-10-27 12:33 ` [PATCH v8 03/32] vfs: fix readlinkat to retry on ESTALE Jeff Layton
2012-10-27 12:33 ` [PATCH v8 04/32] vfs: add new "reval" argument to kern_path_create and user_path_create Jeff Layton
2012-10-27 12:33 ` [PATCH v8 05/32] vfs: fix mknodat to retry on ESTALE errors Jeff Layton
2012-10-27 12:33 ` [PATCH v8 07/32] vfs: fix symlinkat " Jeff Layton
2012-10-27 12:33 ` [PATCH v8 08/32] vfs: fix linkat " Jeff Layton
2012-10-27 12:33 ` [PATCH v8 09/32] vfs: add a reval argument to user_path_parent Jeff Layton
[not found] ` <1351341219-17837-1-git-send-email-jlayton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-10-27 12:33 ` [PATCH v8 06/32] vfs: fix mkdir to retry on ESTALE errors Jeff Layton
2012-10-27 12:33 ` Jeff Layton [this message]
2012-10-27 12:33 ` [PATCH v8 16/32] vfs: make chroot retry once on ESTALE error Jeff Layton
2012-10-27 12:33 ` [PATCH v8 21/32] vfs: allow setxattr to retry once on ESTALE errors Jeff Layton
2012-10-27 12:33 ` [PATCH v8 22/32] vfs: allow lsetxattr() " Jeff Layton
2012-10-27 12:33 ` [PATCH v8 32/32] vfs: make number of ESTALE retries tunable Jeff Layton
2012-10-27 12:33 ` [PATCH v8 11/32] vfs: make do_unlinkat retry on ESTALE errors Jeff Layton
[not found] ` <1351341219-17837-12-git-send-email-jlayton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-10-30 16:14 ` J. Bruce Fields
[not found] ` <20121030161429.GD24618-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2012-10-30 16:33 ` Jeff Layton
[not found] ` <20121030123355.5c404373-9yPaYZwiELC+kQycOl6kW4xkIHaj4LzF@public.gmane.org>
2012-10-30 19:28 ` J. Bruce Fields
[not found] ` <20121030192809.GE24618-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2012-10-30 19:45 ` Jeff Layton
2012-10-27 12:33 ` [PATCH v8 12/32] vfs: fix renameat to " Jeff Layton
2012-10-27 12:33 ` [PATCH v8 13/32] vfs: have do_sys_truncate retry once on an ESTALE error Jeff Layton
2012-10-27 12:33 ` [PATCH v8 14/32] vfs: have faccessat " Jeff Layton
2012-10-27 12:33 ` [PATCH v8 15/32] vfs: have chdir retry lookup and call once on " Jeff Layton
2012-10-27 12:33 ` [PATCH v8 17/32] vfs: make fchmodat retry once on ESTALE errors Jeff Layton
2012-10-27 12:33 ` [PATCH v8 18/32] vfs: make fchownat " Jeff Layton
2012-10-27 12:33 ` [PATCH v8 19/32] vfs: fix user_statfs to " Jeff Layton
2012-10-27 12:33 ` [PATCH v8 20/32] vfs: allow utimensat() calls to retry once on an ESTALE error Jeff Layton
2012-10-27 12:33 ` [PATCH v8 23/32] vfs: make getxattr " Jeff Layton
2012-10-27 12:33 ` [PATCH v8 24/32] vfs: make lgetxattr retry once on ESTALE Jeff Layton
2012-10-27 12:33 ` [PATCH v8 25/32] vfs: make listxattr retry once on ESTALE error Jeff Layton
2012-10-27 12:33 ` [PATCH v8 26/32] vfs: make llistxattr " Jeff Layton
2012-10-27 12:33 ` [PATCH v8 27/32] vfs: make removexattr retry once on ESTALE Jeff Layton
2012-10-27 12:33 ` [PATCH v8 28/32] vfs: make lremovexattr retry once on ESTALE error Jeff Layton
2012-10-27 12:33 ` [PATCH v8 29/32] vfs: convert do_filp_open to use retry_estale helper Jeff Layton
2012-10-27 12:33 ` [PATCH v8 30/32] vfs: convert do_file_open_root " Jeff Layton
2012-10-27 12:33 ` [PATCH v8 31/32] vfs: convert filename_lookup " Jeff Layton
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