Subject: [merged] ufs-sb-mutex-merge-mutex_destroy.patch removed from -mm tree
To: fabf@xxxxxxxxx,dushistov@xxxxxxx,fengguang.wu@xxxxxxxxx,jet.chen@xxxxxxxxx,mm-commits@xxxxxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Mon, 09 Jun 2014 12:42:01 -0700
The patch titled
Subject: ufs: sb mutex merge + mutex_destroy
has been removed from the -mm tree. Its filename was
ufs-sb-mutex-merge-mutex_destroy.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Fabian Frederick <fabf@xxxxxxxxx>
Subject: ufs: sb mutex merge + mutex_destroy
788257d6101d9 ("ufs: remove the BKL") replaced BKL with mutex protection
using functions lock_ufs, unlock_ufs and struct mutex 'mutex' in sb_info.
b6963327e052 ("ufs: drop lock/unlock super") removed lock/unlock super and
added struct mutex 's_lock' in sb_info.
Those 2 mutexes are generally locked/unlocked at the same time except in
allocation (balloc, ialloc).
This patch merges the 2 mutexes and propagates first commit solution. It
also adds mutex destruction before kfree during ufs_fill_super failure and
ufs_put_super.
[akpm@xxxxxxxxxxxxxxxxxxxx: avoid ifdefs, return -EROFS not -EINVAL]
Signed-off-by: Fabian Frederick <fabf@xxxxxxxxx>
Cc: Evgeniy Dushistov <dushistov@xxxxxxx>
Cc: "Chen, Jet" <jet.chen@xxxxxxxxx>
Cc: Wu Fengguang <fengguang.wu@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/ufs/balloc.c | 30 +++++++++++++++---------------
fs/ufs/ialloc.c | 17 ++++++++---------
fs/ufs/super.c | 28 ++++++++++------------------
fs/ufs/ufs.h | 1 -
4 files changed, 33 insertions(+), 43 deletions(-)
diff -puN fs/ufs/balloc.c~ufs-sb-mutex-merge-mutex_destroy fs/ufs/balloc.c
--- a/fs/ufs/balloc.c~ufs-sb-mutex-merge-mutex_destroy
+++ a/fs/ufs/balloc.c
@@ -52,7 +52,7 @@ void ufs_free_fragments(struct inode *in
if (ufs_fragnum(fragment) + count > uspi->s_fpg)
ufs_error (sb, "ufs_free_fragments", "internal error");
- mutex_lock(&UFS_SB(sb)->s_lock);
+ lock_ufs(sb);
cgno = ufs_dtog(uspi, fragment);
bit = ufs_dtogd(uspi, fragment);
@@ -116,12 +116,12 @@ void ufs_free_fragments(struct inode *in
ubh_sync_block(UCPI_UBH(ucpi));
ufs_mark_sb_dirty(sb);
- mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
UFSD("EXIT\n");
return;
failed:
- mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
UFSD("EXIT (FAILED)\n");
return;
}
@@ -151,7 +151,7 @@ void ufs_free_blocks(struct inode *inode
goto failed;
}
- mutex_lock(&UFS_SB(sb)->s_lock);
+ lock_ufs(sb);
do_more:
overflow = 0;
@@ -211,12 +211,12 @@ do_more:
}
ufs_mark_sb_dirty(sb);
- mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
UFSD("EXIT\n");
return;
failed_unlock:
- mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
failed:
UFSD("EXIT (FAILED)\n");
return;
@@ -357,7 +357,7 @@ u64 ufs_new_fragments(struct inode *inod
usb1 = ubh_get_usb_first(uspi);
*err = -ENOSPC;
- mutex_lock(&UFS_SB(sb)->s_lock);
+ lock_ufs(sb);
tmp = ufs_data_ptr_to_cpu(sb, p);
if (count + ufs_fragnum(fragment) > uspi->s_fpb) {
@@ -378,19 +378,19 @@ u64 ufs_new_fragments(struct inode *inod
"fragment %llu, tmp %llu\n",
(unsigned long long)fragment,
(unsigned long long)tmp);
- mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
return INVBLOCK;
}
if (fragment < UFS_I(inode)->i_lastfrag) {
UFSD("EXIT (ALREADY ALLOCATED)\n");
- mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
return 0;
}
}
else {
if (tmp) {
UFSD("EXIT (ALREADY ALLOCATED)\n");
- mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
return 0;
}
}
@@ -399,7 +399,7 @@ u64 ufs_new_fragments(struct inode *inod
* There is not enough space for user on the device
*/
if (!capable(CAP_SYS_RESOURCE) && ufs_freespace(uspi, UFS_MINFREE) <= 0) {
- mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
UFSD("EXIT (FAILED)\n");
return 0;
}
@@ -424,7 +424,7 @@ u64 ufs_new_fragments(struct inode *inod
ufs_clear_frags(inode, result + oldcount,
newcount - oldcount, locked_page != NULL);
}
- mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
UFSD("EXIT, result %llu\n", (unsigned long long)result);
return result;
}
@@ -439,7 +439,7 @@ u64 ufs_new_fragments(struct inode *inod
fragment + count);
ufs_clear_frags(inode, result + oldcount, newcount - oldcount,
locked_page != NULL);
- mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
UFSD("EXIT, result %llu\n", (unsigned long long)result);
return result;
}
@@ -477,7 +477,7 @@ u64 ufs_new_fragments(struct inode *inod
*err = 0;
UFS_I(inode)->i_lastfrag = max(UFS_I(inode)->i_lastfrag,
fragment + count);
- mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
if (newcount < request)
ufs_free_fragments (inode, result + newcount, request - newcount);
ufs_free_fragments (inode, tmp, oldcount);
@@ -485,7 +485,7 @@ u64 ufs_new_fragments(struct inode *inod
return result;
}
- mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
UFSD("EXIT (FAILED)\n");
return 0;
}
diff -puN fs/ufs/ialloc.c~ufs-sb-mutex-merge-mutex_destroy fs/ufs/ialloc.c
--- a/fs/ufs/ialloc.c~ufs-sb-mutex-merge-mutex_destroy
+++ a/fs/ufs/ialloc.c
@@ -69,11 +69,11 @@ void ufs_free_inode (struct inode * inod
ino = inode->i_ino;
- mutex_lock(&UFS_SB(sb)->s_lock);
+ lock_ufs(sb);
if (!((ino > 1) && (ino < (uspi->s_ncg * uspi->s_ipg )))) {
ufs_warning(sb, "ufs_free_inode", "reserved inode or nonexistent inode %u\n", ino);
- mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
return;
}
@@ -81,7 +81,7 @@ void ufs_free_inode (struct inode * inod
bit = ufs_inotocgoff (ino);
ucpi = ufs_load_cylinder (sb, cg);
if (!ucpi) {
- mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
return;
}
ucg = ubh_get_ucg(UCPI_UBH(ucpi));
@@ -115,7 +115,7 @@ void ufs_free_inode (struct inode * inod
ubh_sync_block(UCPI_UBH(ucpi));
ufs_mark_sb_dirty(sb);
- mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
UFSD("EXIT\n");
}
@@ -193,7 +193,7 @@ struct inode *ufs_new_inode(struct inode
sbi = UFS_SB(sb);
uspi = sbi->s_uspi;
- mutex_lock(&sbi->s_lock);
+ lock_ufs(sb);
/*
* Try to place the inode in its parent directory
@@ -328,21 +328,20 @@ cg_found:
sync_dirty_buffer(bh);
brelse(bh);
}
-
- mutex_unlock(&sbi->s_lock);
+ unlock_ufs(sb);
UFSD("allocating inode %lu\n", inode->i_ino);
UFSD("EXIT\n");
return inode;
fail_remove_inode:
- mutex_unlock(&sbi->s_lock);
+ unlock_ufs(sb);
clear_nlink(inode);
iput(inode);
UFSD("EXIT (FAILED): err %d\n", err);
return ERR_PTR(err);
failed:
- mutex_unlock(&sbi->s_lock);
+ unlock_ufs(sb);
make_bad_inode(inode);
iput (inode);
UFSD("EXIT (FAILED): err %d\n", err);
diff -puN fs/ufs/super.c~ufs-sb-mutex-merge-mutex_destroy fs/ufs/super.c
--- a/fs/ufs/super.c~ufs-sb-mutex-merge-mutex_destroy
+++ a/fs/ufs/super.c
@@ -697,7 +697,6 @@ static int ufs_sync_fs(struct super_bloc
unsigned flags;
lock_ufs(sb);
- mutex_lock(&UFS_SB(sb)->s_lock);
UFSD("ENTER\n");
@@ -715,7 +714,6 @@ static int ufs_sync_fs(struct super_bloc
ufs_put_cstotal(sb);
UFSD("EXIT\n");
- mutex_unlock(&UFS_SB(sb)->s_lock);
unlock_ufs(sb);
return 0;
@@ -760,6 +758,7 @@ static void ufs_put_super(struct super_b
ubh_brelse_uspi (sbi->s_uspi);
kfree (sbi->s_uspi);
+ mutex_destroy(&sbi->mutex);
kfree (sbi);
sb->s_fs_info = NULL;
UFSD("EXIT\n");
@@ -786,6 +785,14 @@ static int ufs_fill_super(struct super_b
flags = 0;
UFSD("ENTER\n");
+
+#ifndef CONFIG_UFS_FS_WRITE
+ if (!(sb->s_flags & MS_RDONLY)) {
+ printk("ufs was compiled with read-only support, "
+ "can't be mounted as read-write\n");
+ return -EROFS;
+ }
+#endif
sbi = kzalloc(sizeof(struct ufs_sb_info), GFP_KERNEL);
if (!sbi)
@@ -795,15 +802,7 @@ static int ufs_fill_super(struct super_b
UFSD("flag %u\n", (int)(sb->s_flags & MS_RDONLY));
-#ifndef CONFIG_UFS_FS_WRITE
- if (!(sb->s_flags & MS_RDONLY)) {
- printk("ufs was compiled with read-only support, "
- "can't be mounted as read-write\n");
- goto failed;
- }
-#endif
mutex_init(&sbi->mutex);
- mutex_init(&sbi->s_lock);
spin_lock_init(&sbi->work_lock);
INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs);
/*
@@ -1257,6 +1256,7 @@ magic_found:
return 0;
failed:
+ mutex_destroy(&sbi->mutex);
if (ubh)
ubh_brelse_uspi (uspi);
kfree (uspi);
@@ -1280,7 +1280,6 @@ static int ufs_remount (struct super_blo
sync_filesystem(sb);
lock_ufs(sb);
- mutex_lock(&UFS_SB(sb)->s_lock);
uspi = UFS_SB(sb)->s_uspi;
flags = UFS_SB(sb)->s_flags;
usb1 = ubh_get_usb_first(uspi);
@@ -1294,7 +1293,6 @@ static int ufs_remount (struct super_blo
new_mount_opt = 0;
ufs_set_opt (new_mount_opt, ONERROR_LOCK);
if (!ufs_parse_options (data, &new_mount_opt)) {
- mutex_unlock(&UFS_SB(sb)->s_lock);
unlock_ufs(sb);
return -EINVAL;
}
@@ -1302,14 +1300,12 @@ static int ufs_remount (struct super_blo
new_mount_opt |= ufstype;
} else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) {
printk("ufstype can't be changed during remount\n");
- mutex_unlock(&UFS_SB(sb)->s_lock);
unlock_ufs(sb);
return -EINVAL;
}
if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
UFS_SB(sb)->s_mount_opt = new_mount_opt;
- mutex_unlock(&UFS_SB(sb)->s_lock);
unlock_ufs(sb);
return 0;
}
@@ -1334,7 +1330,6 @@ static int ufs_remount (struct super_blo
#ifndef CONFIG_UFS_FS_WRITE
printk("ufs was compiled with read-only support, "
"can't be mounted as read-write\n");
- mutex_unlock(&UFS_SB(sb)->s_lock);
unlock_ufs(sb);
return -EINVAL;
#else
@@ -1344,13 +1339,11 @@ static int ufs_remount (struct super_blo
ufstype != UFS_MOUNT_UFSTYPE_SUNx86 &&
ufstype != UFS_MOUNT_UFSTYPE_UFS2) {
printk("this ufstype is read-only supported\n");
- mutex_unlock(&UFS_SB(sb)->s_lock);
unlock_ufs(sb);
return -EINVAL;
}
if (!ufs_read_cylinder_structures(sb)) {
printk("failed during remounting\n");
- mutex_unlock(&UFS_SB(sb)->s_lock);
unlock_ufs(sb);
return -EPERM;
}
@@ -1358,7 +1351,6 @@ static int ufs_remount (struct super_blo
#endif
}
UFS_SB(sb)->s_mount_opt = new_mount_opt;
- mutex_unlock(&UFS_SB(sb)->s_lock);
unlock_ufs(sb);
return 0;
}
diff -puN fs/ufs/ufs.h~ufs-sb-mutex-merge-mutex_destroy fs/ufs/ufs.h
--- a/fs/ufs/ufs.h~ufs-sb-mutex-merge-mutex_destroy
+++ a/fs/ufs/ufs.h
@@ -24,7 +24,6 @@ struct ufs_sb_info {
int work_queued; /* non-zero if the delayed work is queued */
struct delayed_work sync_work; /* FS sync delayed work */
spinlock_t work_lock; /* protects sync_work and work_queued */
- struct mutex s_lock;
};
struct ufs_inode_info {
_
Patches currently in -mm which might be from fabf@xxxxxxxxx are
origin.patch
fs-cifs-remove-obsolete-__constant.patch
kernel-posix-timersc-code-clean-up.patch
kernel-posix-timersc-code-clean-up-checkpatch-fixes.patch
fs-ext4-fsyncc-generic_file_fsync-call-based-on-barrier-flag.patch
fs-isofs-logging-clean-up.patch
linux-next.patch
kernel-watchdogc-convert-printk-pr_warning-to-pr_foo.patch
init-mainc-code-clean-up.patch
kernel-kprobesc-convert-printk-to-pr_foo.patch
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