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authorMatthew Wilcox <matthew.r.wilcox@intel.com>2015-02-16 15:59:15 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-16 17:56:03 -0800
commit0de4830fd49f60d04ba37e8b32f95100f3953c39 (patch)
treea37fba1094d21dd0474cd8ab4edffa7c687b4f69
parente748dcd095ddee50e7a7deda2e26247715318a2e (diff)
downloadlinux-0de4830fd49f60d04ba37e8b32f95100f3953c39.tar.bz2
ext2: remove ext2_xip_verify_sb()
Jan Kara pointed out that calling ext2_xip_verify_sb() in ext2_remount() doesn't make sense, since changing the XIP option on remount isn't allowed. It also doesn't make sense to re-check whether blocksize is supported since it can't change between mounts. Replace the call to ext2_xip_verify_sb() in ext2_fill_super() with the equivalent check and delete the definition. Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Cc: Andreas Dilger <andreas.dilger@intel.com> Cc: Boaz Harrosh <boaz@plexistor.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Dave Chinner <david@fromorbit.com> Cc: Jan Kara <jack@suse.cz> Cc: Jens Axboe <axboe@kernel.dk> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--fs/ext2/super.c33
-rw-r--r--fs/ext2/xip.c12
-rw-r--r--fs/ext2/xip.h2
3 files changed, 12 insertions, 35 deletions
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index ae55fddc26a9..83c5d51b8ede 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -877,9 +877,6 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
((EXT2_SB(sb)->s_mount_opt & EXT2_MOUNT_POSIX_ACL) ?
MS_POSIXACL : 0);
- ext2_xip_verify_sb(sb); /* see if bdev supports xip, unset
- EXT2_MOUNT_XIP if not */
-
if (le32_to_cpu(es->s_rev_level) == EXT2_GOOD_OLD_REV &&
(EXT2_HAS_COMPAT_FEATURE(sb, ~0U) ||
EXT2_HAS_RO_COMPAT_FEATURE(sb, ~0U) ||
@@ -909,11 +906,17 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
blocksize = BLOCK_SIZE << le32_to_cpu(sbi->s_es->s_log_block_size);
- if (ext2_use_xip(sb) && blocksize != PAGE_SIZE) {
- if (!silent)
+ if (sbi->s_mount_opt & EXT2_MOUNT_XIP) {
+ if (blocksize != PAGE_SIZE) {
ext2_msg(sb, KERN_ERR,
- "error: unsupported blocksize for xip");
- goto failed_mount;
+ "error: unsupported blocksize for xip");
+ goto failed_mount;
+ }
+ if (!sb->s_bdev->bd_disk->fops->direct_access) {
+ ext2_msg(sb, KERN_ERR,
+ "error: device does not support xip");
+ goto failed_mount;
+ }
}
/* If the blocksize doesn't match, re-read the thing.. */
@@ -1259,7 +1262,6 @@ static int ext2_remount (struct super_block * sb, int * flags, char * data)
{
struct ext2_sb_info * sbi = EXT2_SB(sb);
struct ext2_super_block * es;
- unsigned long old_mount_opt = sbi->s_mount_opt;
struct ext2_mount_options old_opts;
unsigned long old_sb_flags;
int err;
@@ -1284,22 +1286,11 @@ static int ext2_remount (struct super_block * sb, int * flags, char * data)
sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
((sbi->s_mount_opt & EXT2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
- ext2_xip_verify_sb(sb); /* see if bdev supports xip, unset
- EXT2_MOUNT_XIP if not */
-
- if ((ext2_use_xip(sb)) && (sb->s_blocksize != PAGE_SIZE)) {
- ext2_msg(sb, KERN_WARNING,
- "warning: unsupported blocksize for xip");
- err = -EINVAL;
- goto restore_opts;
- }
-
es = sbi->s_es;
- if ((sbi->s_mount_opt ^ old_mount_opt) & EXT2_MOUNT_XIP) {
+ if ((sbi->s_mount_opt ^ old_opts.s_mount_opt) & EXT2_MOUNT_XIP) {
ext2_msg(sb, KERN_WARNING, "warning: refusing change of "
"xip flag with busy inodes while remounting");
- sbi->s_mount_opt &= ~EXT2_MOUNT_XIP;
- sbi->s_mount_opt |= old_mount_opt & EXT2_MOUNT_XIP;
+ sbi->s_mount_opt ^= EXT2_MOUNT_XIP;
}
if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
spin_unlock(&sbi->s_lock);
diff --git a/fs/ext2/xip.c b/fs/ext2/xip.c
index 132d4daf98c4..66ca1133827e 100644
--- a/fs/ext2/xip.c
+++ b/fs/ext2/xip.c
@@ -13,15 +13,3 @@
#include "ext2.h"
#include "xip.h"
-void ext2_xip_verify_sb(struct super_block *sb)
-{
- struct ext2_sb_info *sbi = EXT2_SB(sb);
-
- if ((sbi->s_mount_opt & EXT2_MOUNT_XIP) &&
- !sb->s_bdev->bd_disk->fops->direct_access) {
- sbi->s_mount_opt &= (~EXT2_MOUNT_XIP);
- ext2_msg(sb, KERN_WARNING,
- "warning: ignoring xip option - "
- "not supported by bdev");
- }
-}
diff --git a/fs/ext2/xip.h b/fs/ext2/xip.h
index e7b9f0a2cc54..87eeb0460e8c 100644
--- a/fs/ext2/xip.h
+++ b/fs/ext2/xip.h
@@ -6,13 +6,11 @@
*/
#ifdef CONFIG_EXT2_FS_XIP
-extern void ext2_xip_verify_sb (struct super_block *);
static inline int ext2_use_xip (struct super_block *sb)
{
struct ext2_sb_info *sbi = EXT2_SB(sb);
return (sbi->s_mount_opt & EXT2_MOUNT_XIP);
}
#else
-#define ext2_xip_verify_sb(sb) do { } while (0)
#define ext2_use_xip(sb) 0
#endif