From: Jeff Layton <jlayton@redhat.com>
To: viro@zeniv.linux.org.uk
Cc: linux-fsdevel@vger.kernel.org, linux-nfs@vger.kernel.org,
linux-kernel@vger.kernel.org, michael.brantley@deshaw.com,
hch@infradead.org, miklos@szeredi.hu, pstaubach@exagrid.com
Subject: [PATCH v8 05/32] vfs: fix mknodat to retry on ESTALE errors
Date: Sat, 27 Oct 2012 08:33:12 -0400 [thread overview]
Message-ID: <1351341219-17837-6-git-send-email-jlayton@redhat.com> (raw)
In-Reply-To: <1351341219-17837-1-git-send-email-jlayton@redhat.com>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
---
fs/namei.c | 43 +++++++++++++++++++++++++------------------
1 file changed, 25 insertions(+), 18 deletions(-)
diff --git a/fs/namei.c b/fs/namei.c
index a2bb283..7b0ca39 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -3177,34 +3177,41 @@ SYSCALL_DEFINE4(mknodat, int, dfd, const char __user *, filename, umode_t, mode,
struct dentry *dentry;
struct path path;
int error;
+ unsigned int try = 0;
error = may_mknod(mode);
if (error)
return error;
- dentry = user_path_create(dfd, filename, &path, false, false);
- if (IS_ERR(dentry))
- return PTR_ERR(dentry);
+ do {
+ dentry = user_path_create(dfd, filename, &path, false, try);
+ if (IS_ERR(dentry))
+ return PTR_ERR(dentry);
- if (!IS_POSIXACL(path.dentry->d_inode))
- mode &= ~current_umask();
- error = security_path_mknod(&path, dentry, mode, dev);
- if (error)
- goto out;
- switch (mode & S_IFMT) {
- case 0: case S_IFREG:
- error = vfs_create(path.dentry->d_inode,dentry,mode,true);
+ if (!IS_POSIXACL(path.dentry->d_inode))
+ mode &= ~current_umask();
+ error = security_path_mknod(&path, dentry, mode, dev);
+ if (error)
+ goto out;
+ switch (mode & S_IFMT) {
+ case 0:
+ case S_IFREG:
+ error = vfs_create(path.dentry->d_inode, dentry,
+ mode, true);
break;
- case S_IFCHR: case S_IFBLK:
- error = vfs_mknod(path.dentry->d_inode,dentry,mode,
+ case S_IFCHR:
+ case S_IFBLK:
+ error = vfs_mknod(path.dentry->d_inode, dentry, mode,
new_decode_dev(dev));
break;
- case S_IFIFO: case S_IFSOCK:
- error = vfs_mknod(path.dentry->d_inode,dentry,mode,0);
- break;
- }
+ case S_IFIFO:
+ case S_IFSOCK:
+ error = vfs_mknod(path.dentry->d_inode, dentry,
+ mode, 0);
+ }
out:
- done_path_create(&path, dentry);
+ done_path_create(&path, dentry);
+ } while (retry_estale(error, try++));
return error;
}
--
1.7.11.7
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 ` Jeff Layton [this message]
[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 ` [PATCH v8 10/32] vfs: make rmdir " Jeff Layton
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 07/32] vfs: fix symlinkat to retry on ESTALE errors 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
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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