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author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-11 15:31:13 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-11 15:31:13 -0800 |
commit | 3126c136bc30225d7a43af741778aa50e95e467a (patch) | |
tree | 71e6f0de6e1f4cde200dd632da4d2f61180289bf /arch/mips | |
parent | f4d544ee5720d336a8c64f9fd33efb888c302309 (diff) | |
parent | 8e0eb4011bd73d5f91b215b532f74eef478ef795 (diff) | |
download | kernel_samsung_smdk4412-3126c136bc30225d7a43af741778aa50e95e467a.zip kernel_samsung_smdk4412-3126c136bc30225d7a43af741778aa50e95e467a.tar.gz kernel_samsung_smdk4412-3126c136bc30225d7a43af741778aa50e95e467a.tar.bz2 |
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6: (21 commits)
ext3: PTR_ERR return of wrong pointer in setup_new_group_blocks()
ext3: Fix data / filesystem corruption when write fails to copy data
ext4: Support for 64-bit quota format
ext3: Support for vfsv1 quota format
quota: Implement quota format with 64-bit space and inode limits
quota: Move definition of QFMT_OCFS2 to linux/quota.h
ext2: fix comment in ext2_find_entry about return values
ext3: Unify log messages in ext3
ext2: clear uptodate flag on super block I/O error
ext2: Unify log messages in ext2
ext3: make "norecovery" an alias for "noload"
ext3: Don't update the superblock in ext3_statfs()
ext3: journal all modifications in ext3_xattr_set_handle
ext2: Explicitly assign values to on-disk enum of filetypes
quota: Fix WARN_ON in lookup_one_len
const: struct quota_format_ops
ubifs: remove manual O_SYNC handling
afs: remove manual O_SYNC handling
kill wait_on_page_writeback_range
vfs: Implement proper O_SYNC semantics
...
Diffstat (limited to 'arch/mips')
-rw-r--r-- | arch/mips/include/asm/fcntl.h | 17 | ||||
-rw-r--r-- | arch/mips/kernel/kspd.c | 1 | ||||
-rw-r--r-- | arch/mips/loongson/common/mem.c | 2 | ||||
-rw-r--r-- | arch/mips/mm/cache.c | 2 |
4 files changed, 19 insertions, 3 deletions
diff --git a/arch/mips/include/asm/fcntl.h b/arch/mips/include/asm/fcntl.h index 2a52333..7c6681a 100644 --- a/arch/mips/include/asm/fcntl.h +++ b/arch/mips/include/asm/fcntl.h @@ -10,7 +10,7 @@ #define O_APPEND 0x0008 -#define O_SYNC 0x0010 +#define O_DSYNC 0x0010 /* used to be O_SYNC, see below */ #define O_NONBLOCK 0x0080 #define O_CREAT 0x0100 /* not fcntl */ #define O_TRUNC 0x0200 /* not fcntl */ @@ -18,6 +18,21 @@ #define O_NOCTTY 0x0800 /* not fcntl */ #define FASYNC 0x1000 /* fcntl, for BSD compatibility */ #define O_LARGEFILE 0x2000 /* allow large file opens */ +/* + * Before Linux 2.6.32 only O_DSYNC semantics were implemented, but using + * the O_SYNC flag. We continue to use the existing numerical value + * for O_DSYNC semantics now, but using the correct symbolic name for it. + * This new value is used to request true Posix O_SYNC semantics. It is + * defined in this strange way to make sure applications compiled against + * new headers get at least O_DSYNC semantics on older kernels. + * + * This has the nice side-effect that we can simply test for O_DSYNC + * wherever we do not care if O_DSYNC or O_SYNC is used. + * + * Note: __O_SYNC must never be used directly. + */ +#define __O_SYNC 0x4000 +#define O_SYNC (__O_SYNC|O_DSYNC) #define O_DIRECT 0x8000 /* direct disk access hint */ #define F_GETLK 14 diff --git a/arch/mips/kernel/kspd.c b/arch/mips/kernel/kspd.c index ad4e017..80e2ba6 100644 --- a/arch/mips/kernel/kspd.c +++ b/arch/mips/kernel/kspd.c @@ -82,6 +82,7 @@ static int sp_stopping; #define MTSP_O_SHLOCK 0x0010 #define MTSP_O_EXLOCK 0x0020 #define MTSP_O_ASYNC 0x0040 +/* XXX: check which of these is actually O_SYNC vs O_DSYNC */ #define MTSP_O_FSYNC O_SYNC #define MTSP_O_NOFOLLOW 0x0100 #define MTSP_O_SYNC 0x0080 diff --git a/arch/mips/loongson/common/mem.c b/arch/mips/loongson/common/mem.c index 7c92f79..e94ef15 100644 --- a/arch/mips/loongson/common/mem.c +++ b/arch/mips/loongson/common/mem.c @@ -26,7 +26,7 @@ void __init prom_init_memory(void) /* override of arch/mips/mm/cache.c: __uncached_access */ int __uncached_access(struct file *file, unsigned long addr) { - if (file->f_flags & O_SYNC) + if (file->f_flags & O_DSYNC) return 1; return addr >= __pa(high_memory) || diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c index 694d51f..102b2df 100644 --- a/arch/mips/mm/cache.c +++ b/arch/mips/mm/cache.c @@ -194,7 +194,7 @@ void __devinit cpu_cache_init(void) int __weak __uncached_access(struct file *file, unsigned long addr) { - if (file->f_flags & O_SYNC) + if (file->f_flags & O_DSYNC) return 1; return addr >= __pa(high_memory); |