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authorLinus Torvalds <torvalds@linux-foundation.org>2013-09-06 09:06:02 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-09-06 09:06:02 -0700
commitec0ad730802173ec17e942f4b652a1819b1025b2 (patch)
tree25020c312014f1028447f981b0014f90c36b158a /fs/ext3
parenteb97a784f02991cc3736d787511e788f32f0627f (diff)
parent97a2847d064e2fdd2e3cd4ff14cad2f377f0677a (diff)
downloadlinux-ec0ad730802173ec17e942f4b652a1819b1025b2.tar.bz2
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull ext3, reiserfs, udf & isofs fixes from Jan Kara: "The contains a bunch of ext3 cleanups and minor improvements, major reiserfs locking changes which should hopefully fix deadlocks introduced by BKL removal, and udf/isofs changes to refuse mounting fs rw instead of mounting it ro automatically which makes eject button work as expected for all media (see the changelog for why userspace should be ok with this change)" * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: jbd: use a single printk for jbd_debug() reiserfs: locking, release lock around quota operations reiserfs: locking, handle nested locks properly reiserfs: locking, push write lock out of xattr code jbd: relocate assert after state lock in journal_commit_transaction() udf: Refuse RW mount of the filesystem instead of making it RO udf: Standardize return values in mount sequence isofs: Refuse RW mount of the filesystem instead of making it RO ext3: allow specifying external journal by pathname mount option jbd: remove unneeded semicolon
Diffstat (limited to 'fs/ext3')
-rw-r--r--fs/ext3/super.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index c47f14750722..c50c76190373 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -27,6 +27,7 @@
#include <linux/seq_file.h>
#include <linux/log2.h>
#include <linux/cleancache.h>
+#include <linux/namei.h>
#include <asm/uaccess.h>
@@ -819,6 +820,7 @@ enum {
Opt_user_xattr, Opt_nouser_xattr, Opt_acl, Opt_noacl,
Opt_reservation, Opt_noreservation, Opt_noload, Opt_nobh, Opt_bh,
Opt_commit, Opt_journal_update, Opt_journal_inum, Opt_journal_dev,
+ Opt_journal_path,
Opt_abort, Opt_data_journal, Opt_data_ordered, Opt_data_writeback,
Opt_data_err_abort, Opt_data_err_ignore,
Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
@@ -860,6 +862,7 @@ static const match_table_t tokens = {
{Opt_journal_update, "journal=update"},
{Opt_journal_inum, "journal=%u"},
{Opt_journal_dev, "journal_dev=%u"},
+ {Opt_journal_path, "journal_path=%s"},
{Opt_abort, "abort"},
{Opt_data_journal, "data=journal"},
{Opt_data_ordered, "data=ordered"},
@@ -975,6 +978,11 @@ static int parse_options (char *options, struct super_block *sb,
int option;
kuid_t uid;
kgid_t gid;
+ char *journal_path;
+ struct inode *journal_inode;
+ struct path path;
+ int error;
+
#ifdef CONFIG_QUOTA
int qfmt;
#endif
@@ -1129,6 +1137,41 @@ static int parse_options (char *options, struct super_block *sb,
return 0;
*journal_devnum = option;
break;
+ case Opt_journal_path:
+ if (is_remount) {
+ ext3_msg(sb, KERN_ERR, "error: cannot specify "
+ "journal on remount");
+ return 0;
+ }
+
+ journal_path = match_strdup(&args[0]);
+ if (!journal_path) {
+ ext3_msg(sb, KERN_ERR, "error: could not dup "
+ "journal device string");
+ return 0;
+ }
+
+ error = kern_path(journal_path, LOOKUP_FOLLOW, &path);
+ if (error) {
+ ext3_msg(sb, KERN_ERR, "error: could not find "
+ "journal device path: error %d", error);
+ kfree(journal_path);
+ return 0;
+ }
+
+ journal_inode = path.dentry->d_inode;
+ if (!S_ISBLK(journal_inode->i_mode)) {
+ ext3_msg(sb, KERN_ERR, "error: journal path %s "
+ "is not a block device", journal_path);
+ path_put(&path);
+ kfree(journal_path);
+ return 0;
+ }
+
+ *journal_devnum = new_encode_dev(journal_inode->i_rdev);
+ path_put(&path);
+ kfree(journal_path);
+ break;
case Opt_noload:
set_opt (sbi->s_mount_opt, NOLOAD);
break;