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authorMatthew Wilcox <matthew.r.wilcox@intel.com>2015-02-16 15:59:31 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-16 17:56:04 -0800
commit9c3ce9ec58716733232b97771b10f31901caf62e (patch)
tree25cc2bebbbc248d97f71262a542c7ee0e96411c0 /fs/ext2/super.c
parent97443aa809a142b1e6db2ccfb046c3a962907204 (diff)
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ext2: get rid of most mentions of XIP in ext2
To help people transition, accept the 'xip' mount option (and report it in /proc/mounts), but print a message encouraging people to switch over to the 'dax' option. Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.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: 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>
Diffstat (limited to 'fs/ext2/super.c')
-rw-r--r--fs/ext2/super.c25
1 files changed, 16 insertions, 9 deletions
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 5f029d8c3a02..d0e746e96511 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -294,6 +294,8 @@ static int ext2_show_options(struct seq_file *seq, struct dentry *root)
#ifdef CONFIG_FS_DAX
if (sbi->s_mount_opt & EXT2_MOUNT_XIP)
seq_puts(seq, ",xip");
+ if (sbi->s_mount_opt & EXT2_MOUNT_DAX)
+ seq_puts(seq, ",dax");
#endif
if (!test_opt(sb, RESERVATION))
@@ -402,7 +404,7 @@ enum {
Opt_resgid, Opt_resuid, Opt_sb, Opt_err_cont, Opt_err_panic,
Opt_err_ro, Opt_nouid32, Opt_nocheck, Opt_debug,
Opt_oldalloc, Opt_orlov, Opt_nobh, Opt_user_xattr, Opt_nouser_xattr,
- Opt_acl, Opt_noacl, Opt_xip, Opt_ignore, Opt_err, Opt_quota,
+ Opt_acl, Opt_noacl, Opt_xip, Opt_dax, Opt_ignore, Opt_err, Opt_quota,
Opt_usrquota, Opt_grpquota, Opt_reservation, Opt_noreservation
};
@@ -431,6 +433,7 @@ static const match_table_t tokens = {
{Opt_acl, "acl"},
{Opt_noacl, "noacl"},
{Opt_xip, "xip"},
+ {Opt_dax, "dax"},
{Opt_grpquota, "grpquota"},
{Opt_ignore, "noquota"},
{Opt_quota, "quota"},
@@ -558,10 +561,14 @@ static int parse_options(char *options, struct super_block *sb)
break;
#endif
case Opt_xip:
+ ext2_msg(sb, KERN_INFO, "use dax instead of xip");
+ set_opt(sbi->s_mount_opt, XIP);
+ /* Fall through */
+ case Opt_dax:
#ifdef CONFIG_FS_DAX
- set_opt (sbi->s_mount_opt, XIP);
+ set_opt(sbi->s_mount_opt, DAX);
#else
- ext2_msg(sb, KERN_INFO, "xip option not supported");
+ ext2_msg(sb, KERN_INFO, "dax option not supported");
#endif
break;
@@ -905,15 +912,15 @@ 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 (sbi->s_mount_opt & EXT2_MOUNT_XIP) {
+ if (sbi->s_mount_opt & EXT2_MOUNT_DAX) {
if (blocksize != PAGE_SIZE) {
ext2_msg(sb, KERN_ERR,
- "error: unsupported blocksize for xip");
+ "error: unsupported blocksize for dax");
goto failed_mount;
}
if (!sb->s_bdev->bd_disk->fops->direct_access) {
ext2_msg(sb, KERN_ERR,
- "error: device does not support xip");
+ "error: device does not support dax");
goto failed_mount;
}
}
@@ -1286,10 +1293,10 @@ static int ext2_remount (struct super_block * sb, int * flags, char * data)
((sbi->s_mount_opt & EXT2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
es = sbi->s_es;
- if ((sbi->s_mount_opt ^ old_opts.s_mount_opt) & EXT2_MOUNT_XIP) {
+ if ((sbi->s_mount_opt ^ old_opts.s_mount_opt) & EXT2_MOUNT_DAX) {
ext2_msg(sb, KERN_WARNING, "warning: refusing change of "
- "xip flag with busy inodes while remounting");
- sbi->s_mount_opt ^= EXT2_MOUNT_XIP;
+ "dax flag with busy inodes while remounting");
+ sbi->s_mount_opt ^= EXT2_MOUNT_DAX;
}
if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
spin_unlock(&sbi->s_lock);