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hfsplus: use atomic bitops for the superblock flags

Bladeren bron 
The flags in the HFS+-specific superlock do get modified during runtime,
use atomic bitops to make the modifications SMP safe.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>
This commit is contained in:
Christoph Hellwig
2010-10-01 05:45:20 +02:00
gecommit door Christoph Hellwig
bovenliggende 7ac9fb9c2a
commit 84adede312
6 gewijzigde bestanden met toevoegingen van 30 en 28 verwijderingen
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10
fs/hfsplus/super.c
Bestand weergeven

@@ -119,7 +119,7 @@ static int hfsplus_system_write_inode(struct inode *inode)
}
if (fork->total_size != cpu_to_be64(inode->i_size)) {
sbi->flags |= HFSPLUS_SB_WRITEBACKUP;
set_bit(HFSPLUS_SB_WRITEBACKUP, &sbi->flags);
inode->i_sb->s_dirt = 1;
}
hfsplus_inode_write_fork(inode, fork);
@@ -170,7 +170,7 @@ int hfsplus_sync_fs(struct super_block *sb, int wait)
vhdr->file_count = cpu_to_be32(sbi->file_count);
mark_buffer_dirty(sbi->s_vhbh);
if (sbi->flags & HFSPLUS_SB_WRITEBACKUP) {
if (test_and_clear_bit(HFSPLUS_SB_WRITEBACKUP, &sbi->flags)) {
if (sbi->sect_count) {
struct buffer_head *bh;
u32 block, offset;
@@ -192,7 +192,6 @@ int hfsplus_sync_fs(struct super_block *sb, int wait)
printk(KERN_WARNING "hfs: backup not found!\n");
}
}
sbi->flags &= ~HFSPLUS_SB_WRITEBACKUP;
}
mutex_unlock(&sbi->alloc_mutex);
mutex_unlock(&sbi->vh_mutex);
@@ -276,7 +275,7 @@ static int hfsplus_remount(struct super_block *sb, int *flags, char *data)
"running fsck.hfsplus is recommended. leaving read-only.\n");
sb->s_flags |= MS_RDONLY;
*flags |= MS_RDONLY;
} else if (sbi.flags & HFSPLUS_SB_FORCE) {
} else if (test_bit(HFSPLUS_SB_FORCE, &sbi.flags)) {
/* nothing */
} else if (vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_SOFTLOCK)) {
printk(KERN_WARNING "hfs: filesystem is marked locked, leaving read-only.\n");
@@ -376,7 +375,7 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
printk(KERN_WARNING "hfs: Filesystem was not cleanly unmounted, "
"running fsck.hfsplus is recommended. mounting read-only.\n");
sb->s_flags |= MS_RDONLY;
} else if (sbi->flags & HFSPLUS_SB_FORCE) {
} else if (test_and_clear_bit(HFSPLUS_SB_FORCE, &sbi->flags)) {
/* nothing */
} else if (vhdr->attributes & cpu_to_be32(HFSPLUS_VOL_SOFTLOCK)) {
printk(KERN_WARNING "hfs: Filesystem is marked locked, mounting read-only.\n");
@@ -386,7 +385,6 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
"use the force option at your own risk, mounting read-only.\n");
sb->s_flags |= MS_RDONLY;
}
sbi->flags &= ~HFSPLUS_SB_FORCE;
/* Load metadata objects (B*Trees) */
sbi->ext_tree = hfs_btree_open(sb, HFSPLUS_EXT_CNID);