Messages in this thread Patch in this message | | | Date | Wed, 6 Aug 2003 13:38:58 +0400 | From | Oleg Drokin <> | Subject | [PATCH] [2.6] reiserfs: fix locking in reiserfs_remount |
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Hello!
Since reiserfs_remount can be called without BKL held, we better take BKL in there. Please apply the below patch. It is against 2.6.0-test2
Bye, Oleg
===== fs/reiserfs/super.c 1.66 vs edited ===== --- 1.66/fs/reiserfs/super.c Sat Jun 21 00:16:06 2003 +++ edited/fs/reiserfs/super.c Tue Aug 5 12:22:10 2003 @@ -761,6 +761,7 @@ if (!reiserfs_parse_options(s, arg, &mount_options, &blocks, NULL)) return -EINVAL; + reiserfs_write_lock(s); handle_attrs(s); /* Add options that are safe here */ @@ -778,17 +779,22 @@ if(blocks) { int rc = reiserfs_resize(s, blocks); - if (rc != 0) + if (rc != 0) { + reiserfs_write_unlock(s); return rc; + } } if (*mount_flags & MS_RDONLY) { /* remount read-only */ - if (s->s_flags & MS_RDONLY) + if (s->s_flags & MS_RDONLY) { /* it is read-only already */ + reiserfs_write_unlock(s); return 0; + } /* try to remount file system with read-only permissions */ if (sb_umount_state(rs) == REISERFS_VALID_FS || REISERFS_SB(s)->s_mount_state != REISERFS_VALID_FS) { + reiserfs_write_unlock(s); return 0; } @@ -800,8 +806,10 @@ s->s_dirt = 0; } else { /* remount read-write */ - if (!(s->s_flags & MS_RDONLY)) + if (!(s->s_flags & MS_RDONLY)) { + reiserfs_write_unlock(s); return 0; /* We are read-write already */ + } REISERFS_SB(s)->s_mount_state = sb_umount_state(rs) ; s->s_flags &= ~MS_RDONLY ; /* now it is safe to call journal_begin */ @@ -824,6 +832,7 @@ if (!( *mount_flags & MS_RDONLY ) ) finish_unfinished( s ); + reiserfs_write_unlock(s); return 0; } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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