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ufs: drop lock/unlock super 

Removed lock/unlock super. Added a new private s_lock mutex.

Signed-off-by: Marco Stornelli <marco.stornelli@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Marco Stornelli 2012-10-06 12:42:28 +02:00 committed by Al Viro
parent c07cb01c45
commit b6963327e0
4 changed files with 35 additions and 33 deletions
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30
fs/ufs/balloc.c
View File

@ -54,7 +54,7 @@ void ufs_free_fragments(struct inode *inode, u64 fragment, unsigned count)
if (ufs_fragnum(fragment) + count > uspi->s_fpg) if (ufs_fragnum(fragment) + count > uspi->s_fpg)
ufs_error (sb, "ufs_free_fragments", "internal error"); ufs_error (sb, "ufs_free_fragments", "internal error");
lock_super(sb); mutex_lock(&UFS_SB(sb)->s_lock);
cgno = ufs_dtog(uspi, fragment); cgno = ufs_dtog(uspi, fragment);
bit = ufs_dtogd(uspi, fragment); bit = ufs_dtogd(uspi, fragment);
@ -118,12 +118,12 @@ void ufs_free_fragments(struct inode *inode, u64 fragment, unsigned count)
ubh_sync_block(UCPI_UBH(ucpi)); ubh_sync_block(UCPI_UBH(ucpi));
ufs_mark_sb_dirty(sb); ufs_mark_sb_dirty(sb);
unlock_super (sb); mutex_unlock(&UFS_SB(sb)->s_lock);
UFSD("EXIT\n"); UFSD("EXIT\n");
return; return;
failed: failed:
unlock_super (sb); mutex_unlock(&UFS_SB(sb)->s_lock);
UFSD("EXIT (FAILED)\n"); UFSD("EXIT (FAILED)\n");
return; return;
} }
@ -155,7 +155,7 @@ void ufs_free_blocks(struct inode *inode, u64 fragment, unsigned count)
goto failed; goto failed;
} }
lock_super(sb); mutex_lock(&UFS_SB(sb)->s_lock);
do_more: do_more:
overflow = 0; overflow = 0;
@ -215,12 +215,12 @@ do_more:
} }
ufs_mark_sb_dirty(sb); ufs_mark_sb_dirty(sb);
unlock_super (sb); mutex_unlock(&UFS_SB(sb)->s_lock);
UFSD("EXIT\n"); UFSD("EXIT\n");
return; return;
failed_unlock: failed_unlock:
unlock_super (sb); mutex_unlock(&UFS_SB(sb)->s_lock);
failed: failed:
UFSD("EXIT (FAILED)\n"); UFSD("EXIT (FAILED)\n");
return; return;
@ -361,7 +361,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
usb1 = ubh_get_usb_first(uspi); usb1 = ubh_get_usb_first(uspi);
*err = -ENOSPC; *err = -ENOSPC;
lock_super (sb); mutex_lock(&UFS_SB(sb)->s_lock);
tmp = ufs_data_ptr_to_cpu(sb, p); tmp = ufs_data_ptr_to_cpu(sb, p);
if (count + ufs_fragnum(fragment) > uspi->s_fpb) { if (count + ufs_fragnum(fragment) > uspi->s_fpb) {
@ -382,19 +382,19 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
"fragment %llu, tmp %llu\n", "fragment %llu, tmp %llu\n",
(unsigned long long)fragment, (unsigned long long)fragment,
(unsigned long long)tmp); (unsigned long long)tmp);
unlock_super(sb); mutex_unlock(&UFS_SB(sb)->s_lock);
return INVBLOCK; return INVBLOCK;
} }
if (fragment < UFS_I(inode)->i_lastfrag) { if (fragment < UFS_I(inode)->i_lastfrag) {
UFSD("EXIT (ALREADY ALLOCATED)\n"); UFSD("EXIT (ALREADY ALLOCATED)\n");
unlock_super (sb); mutex_unlock(&UFS_SB(sb)->s_lock);
return 0; return 0;
} }
} }
else { else {
if (tmp) { if (tmp) {
UFSD("EXIT (ALREADY ALLOCATED)\n"); UFSD("EXIT (ALREADY ALLOCATED)\n");
unlock_super(sb); mutex_unlock(&UFS_SB(sb)->s_lock);
return 0; return 0;
} }
} }
@ -403,7 +403,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
* There is not enough space for user on the device * There is not enough space for user on the device
*/ */
if (!capable(CAP_SYS_RESOURCE) && ufs_freespace(uspi, UFS_MINFREE) <= 0) { if (!capable(CAP_SYS_RESOURCE) && ufs_freespace(uspi, UFS_MINFREE) <= 0) {
unlock_super (sb); mutex_unlock(&UFS_SB(sb)->s_lock);
UFSD("EXIT (FAILED)\n"); UFSD("EXIT (FAILED)\n");
return 0; return 0;
} }
@ -428,7 +428,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
ufs_clear_frags(inode, result + oldcount, ufs_clear_frags(inode, result + oldcount,
newcount - oldcount, locked_page != NULL); newcount - oldcount, locked_page != NULL);
} }
unlock_super(sb); mutex_unlock(&UFS_SB(sb)->s_lock);
UFSD("EXIT, result %llu\n", (unsigned long long)result); UFSD("EXIT, result %llu\n", (unsigned long long)result);
return result; return result;
} }
@ -443,7 +443,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
fragment + count); fragment + count);
ufs_clear_frags(inode, result + oldcount, newcount - oldcount, ufs_clear_frags(inode, result + oldcount, newcount - oldcount,
locked_page != NULL); locked_page != NULL);
unlock_super(sb); mutex_unlock(&UFS_SB(sb)->s_lock);
UFSD("EXIT, result %llu\n", (unsigned long long)result); UFSD("EXIT, result %llu\n", (unsigned long long)result);
return result; return result;
} }
@ -481,7 +481,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
*err = 0; *err = 0;
UFS_I(inode)->i_lastfrag = max(UFS_I(inode)->i_lastfrag, UFS_I(inode)->i_lastfrag = max(UFS_I(inode)->i_lastfrag,
fragment + count); fragment + count);
unlock_super(sb); mutex_unlock(&UFS_SB(sb)->s_lock);
if (newcount < request) if (newcount < request)
ufs_free_fragments (inode, result + newcount, request - newcount); ufs_free_fragments (inode, result + newcount, request - newcount);
ufs_free_fragments (inode, tmp, oldcount); ufs_free_fragments (inode, tmp, oldcount);
@ -489,7 +489,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
return result; return result;
} }
unlock_super(sb); mutex_unlock(&UFS_SB(sb)->s_lock);
UFSD("EXIT (FAILED)\n"); UFSD("EXIT (FAILED)\n");
return 0; return 0;
} }

16
fs/ufs/ialloc.c
View File

@ -71,11 +71,11 @@ void ufs_free_inode (struct inode * inode)
ino = inode->i_ino; ino = inode->i_ino;
lock_super (sb); mutex_lock(&UFS_SB(sb)->s_lock);
if (!((ino > 1) && (ino < (uspi->s_ncg * uspi->s_ipg )))) { if (!((ino > 1) && (ino < (uspi->s_ncg * uspi->s_ipg )))) {
ufs_warning(sb, "ufs_free_inode", "reserved inode or nonexistent inode %u\n", ino); ufs_warning(sb, "ufs_free_inode", "reserved inode or nonexistent inode %u\n", ino);
unlock_super (sb); mutex_unlock(&UFS_SB(sb)->s_lock);
return; return;
} }
@ -83,7 +83,7 @@ void ufs_free_inode (struct inode * inode)
bit = ufs_inotocgoff (ino); bit = ufs_inotocgoff (ino);
ucpi = ufs_load_cylinder (sb, cg); ucpi = ufs_load_cylinder (sb, cg);
if (!ucpi) { if (!ucpi) {
unlock_super (sb); mutex_unlock(&UFS_SB(sb)->s_lock);
return; return;
} }
ucg = ubh_get_ucg(UCPI_UBH(ucpi)); ucg = ubh_get_ucg(UCPI_UBH(ucpi));
@ -117,7 +117,7 @@ void ufs_free_inode (struct inode * inode)
ubh_sync_block(UCPI_UBH(ucpi)); ubh_sync_block(UCPI_UBH(ucpi));
ufs_mark_sb_dirty(sb); ufs_mark_sb_dirty(sb);
unlock_super (sb); mutex_unlock(&UFS_SB(sb)->s_lock);
UFSD("EXIT\n"); UFSD("EXIT\n");
} }
@ -197,7 +197,7 @@ struct inode *ufs_new_inode(struct inode *dir, umode_t mode)
uspi = sbi->s_uspi; uspi = sbi->s_uspi;
usb1 = ubh_get_usb_first(uspi); usb1 = ubh_get_usb_first(uspi);
lock_super (sb); mutex_lock(&sbi->s_lock);
/* /*
* Try to place the inode in its parent directory * Try to place the inode in its parent directory
@ -333,20 +333,20 @@ cg_found:
brelse(bh); brelse(bh);
} }
unlock_super (sb); mutex_unlock(&sbi->s_lock);
UFSD("allocating inode %lu\n", inode->i_ino); UFSD("allocating inode %lu\n", inode->i_ino);
UFSD("EXIT\n"); UFSD("EXIT\n");
return inode; return inode;
fail_remove_inode: fail_remove_inode:
unlock_super(sb); mutex_unlock(&sbi->s_lock);
clear_nlink(inode); clear_nlink(inode);
iput(inode); iput(inode);
UFSD("EXIT (FAILED): err %d\n", err); UFSD("EXIT (FAILED): err %d\n", err);
return ERR_PTR(err); return ERR_PTR(err);
failed: failed:
unlock_super (sb); mutex_unlock(&sbi->s_lock);
make_bad_inode(inode); make_bad_inode(inode);
iput (inode); iput (inode);
UFSD("EXIT (FAILED): err %d\n", err); UFSD("EXIT (FAILED): err %d\n", err);

21
fs/ufs/super.c
View File

@ -699,7 +699,7 @@ static int ufs_sync_fs(struct super_block *sb, int wait)
unsigned flags; unsigned flags;
lock_ufs(sb); lock_ufs(sb);
lock_super(sb); mutex_lock(&UFS_SB(sb)->s_lock);
UFSD("ENTER\n"); UFSD("ENTER\n");
@ -717,7 +717,7 @@ static int ufs_sync_fs(struct super_block *sb, int wait)
ufs_put_cstotal(sb); ufs_put_cstotal(sb);
UFSD("EXIT\n"); UFSD("EXIT\n");
unlock_super(sb); mutex_unlock(&UFS_SB(sb)->s_lock);
unlock_ufs(sb); unlock_ufs(sb);
return 0; return 0;
@ -805,6 +805,7 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent)
} }
#endif #endif
mutex_init(&sbi->mutex); mutex_init(&sbi->mutex);
mutex_init(&sbi->s_lock);
spin_lock_init(&sbi->work_lock); spin_lock_init(&sbi->work_lock);
INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs); INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs);
/* /*
@ -1280,7 +1281,7 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
unsigned flags; unsigned flags;
lock_ufs(sb); lock_ufs(sb);
lock_super(sb); mutex_lock(&UFS_SB(sb)->s_lock);
uspi = UFS_SB(sb)->s_uspi; uspi = UFS_SB(sb)->s_uspi;
flags = UFS_SB(sb)->s_flags; flags = UFS_SB(sb)->s_flags;
usb1 = ubh_get_usb_first(uspi); usb1 = ubh_get_usb_first(uspi);
@ -1294,7 +1295,7 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
new_mount_opt = 0; new_mount_opt = 0;
ufs_set_opt (new_mount_opt, ONERROR_LOCK); ufs_set_opt (new_mount_opt, ONERROR_LOCK);
if (!ufs_parse_options (data, &new_mount_opt)) { if (!ufs_parse_options (data, &new_mount_opt)) {
unlock_super(sb); mutex_unlock(&UFS_SB(sb)->s_lock);
unlock_ufs(sb); unlock_ufs(sb);
return -EINVAL; return -EINVAL;
} }
@ -1302,14 +1303,14 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
new_mount_opt |= ufstype; new_mount_opt |= ufstype;
} else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) { } else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) {
printk("ufstype can't be changed during remount\n"); printk("ufstype can't be changed during remount\n");
unlock_super(sb); mutex_unlock(&UFS_SB(sb)->s_lock);
unlock_ufs(sb); unlock_ufs(sb);
return -EINVAL; return -EINVAL;
} }
if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) { if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
UFS_SB(sb)->s_mount_opt = new_mount_opt; UFS_SB(sb)->s_mount_opt = new_mount_opt;
unlock_super(sb); mutex_unlock(&UFS_SB(sb)->s_lock);
unlock_ufs(sb); unlock_ufs(sb);
return 0; return 0;
} }
@ -1334,7 +1335,7 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
#ifndef CONFIG_UFS_FS_WRITE #ifndef CONFIG_UFS_FS_WRITE
printk("ufs was compiled with read-only support, " printk("ufs was compiled with read-only support, "
"can't be mounted as read-write\n"); "can't be mounted as read-write\n");
unlock_super(sb); mutex_unlock(&UFS_SB(sb)->s_lock);
unlock_ufs(sb); unlock_ufs(sb);
return -EINVAL; return -EINVAL;
#else #else
@ -1344,13 +1345,13 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
ufstype != UFS_MOUNT_UFSTYPE_SUNx86 && ufstype != UFS_MOUNT_UFSTYPE_SUNx86 &&
ufstype != UFS_MOUNT_UFSTYPE_UFS2) { ufstype != UFS_MOUNT_UFSTYPE_UFS2) {
printk("this ufstype is read-only supported\n"); printk("this ufstype is read-only supported\n");
unlock_super(sb); mutex_unlock(&UFS_SB(sb)->s_lock);
unlock_ufs(sb); unlock_ufs(sb);
return -EINVAL; return -EINVAL;
} }
if (!ufs_read_cylinder_structures(sb)) { if (!ufs_read_cylinder_structures(sb)) {
printk("failed during remounting\n"); printk("failed during remounting\n");
unlock_super(sb); mutex_unlock(&UFS_SB(sb)->s_lock);
unlock_ufs(sb); unlock_ufs(sb);
return -EPERM; return -EPERM;
} }
@ -1358,7 +1359,7 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
#endif #endif
} }
UFS_SB(sb)->s_mount_opt = new_mount_opt; UFS_SB(sb)->s_mount_opt = new_mount_opt;
unlock_super(sb); mutex_unlock(&UFS_SB(sb)->s_lock);
unlock_ufs(sb); unlock_ufs(sb);
return 0; return 0;
} }

1
fs/ufs/ufs.h
View File

@ -24,6 +24,7 @@ struct ufs_sb_info {
int work_queued; /* non-zero if the delayed work is queued */ int work_queued; /* non-zero if the delayed work is queued */
struct delayed_work sync_work; /* FS sync delayed work */ struct delayed_work sync_work; /* FS sync delayed work */
spinlock_t work_lock; /* protects sync_work and work_queued */ spinlock_t work_lock; /* protects sync_work and work_queued */
struct mutex s_lock;
}; };
struct ufs_inode_info { struct ufs_inode_info {