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ext2: get rid of most mentions of XIP in ext2

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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>
This commit is contained in:
Matthew Wilcox
2015-02-16 15:59:31 -08:00
committed by Linus Torvalds
부모 97443aa809
커밋 9c3ce9ec58
6개의 변경된 파일과 34개의 추가작업 그리고 25개의 파일을 삭제
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25
fs/ext2/super.c
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@@ -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);