kernel_samsung_sm7125

jenna

History

OGAWA Hirofumi 111ebb6e6f [PATCH] writeback: fix range handling When a writeback_control's `start' and `end' fields are used to indicate a one-byte-range starting at file offset zero, the required values of .start=0,.end=0 mean that the ->writepages() implementation has no way of telling that it is being asked to perform a range request. Because we're currently overloading (start == 0 && end == 0) to mean "this is not a write-a-range request". To make all this sane, the patch changes range of writeback_control. So caller does: If it is calling ->writepages() to write pages, it sets range (range_start/end or range_cyclic) always. And if range_cyclic is true, ->writepages() thinks the range is cyclic, otherwise it just uses range_start and range_end. This patch does, - Add LLONG_MAX, LLONG_MIN, ULLONG_MAX to include/linux/kernel.h -1 is usually ok for range_end (type is long long). But, if someone did, range_end += val; range_end is "val - 1" u64val = range_end >> bits; u64val is "~(0ULL)" or something, they are wrong. So, this adds LLONG_MAX to avoid nasty things, and uses LLONG_MAX for range_end. - All callers of ->writepages() sets range_start/end or range_cyclic. - Fix updates of ->writeback_index. It seems already bit strange. If it starts at 0 and ended by check of nr_to_write, this last index may reduce chance to scan end of file. So, this updates ->writeback_index only if range_cyclic is true or whole-file is scanned. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Cc: Nathan Scott <nathans@sgi.com> Cc: Anton Altaparmakov <aia21@cantab.net> Cc: Steven French <sfrench@us.ibm.com> Cc: "Vladimir V. Saveliev" <vs@namesys.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		19 years ago
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9p	[PATCH] VFS: Permit filesystem to override root dentry on mount	19 years ago
adfs	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
affs	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
afs	[PATCH] VFS: Permit filesystem to override root dentry on mount	19 years ago
autofs	[PATCH] VFS: Permit filesystem to override root dentry on mount	19 years ago
autofs4	[PATCH] VFS: Permit filesystem to override root dentry on mount	19 years ago
befs	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
bfs	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
cifs	[PATCH] writeback: fix range handling	19 years ago
coda	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
configfs	[PATCH] VFS: Permit filesystem to override root dentry on mount	19 years ago
cramfs	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
debugfs	[PATCH] VFS: Permit filesystem to override root dentry on mount	19 years ago
devfs	[PATCH] VFS: Permit filesystem to override root dentry on mount	19 years ago
devpts	[PATCH] VFS: Permit filesystem to override root dentry on mount	19 years ago
efs	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
exportfs	[PATCH] NFS server subtree_check returns dubious value	19 years ago
ext2	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
ext3	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
fat	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
freevxfs	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
fuse	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
hfs	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
hfsplus	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
hostfs	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
hpfs	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
hppfs	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
hugetlbfs	[PATCH] tightening hugetlb strict accounting	19 years ago
isofs	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
jbd	…
jffs	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
jffs2	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
jfs	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
lockd	NFS: make 2 functions static	19 years ago
minix	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
msdos	[PATCH] VFS: Permit filesystem to override root dentry on mount	19 years ago
ncpfs	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
nfs	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
nfs_common	…
nfsd	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
nls	…
ntfs	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
ocfs2	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
openpromfs	[PATCH] VFS: Permit filesystem to override root dentry on mount	19 years ago
partitions	[PATCH] Driver core: add generic "subsystem" link to all devices	19 years ago
proc	[PATCH] VFS: Permit filesystem to override root dentry on mount	19 years ago
qnx4	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
ramfs	[PATCH] VFS: Permit filesystem to override root dentry on mount	19 years ago
reiserfs	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
romfs	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
smbfs	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
sysfs	[PATCH] VFS: Permit filesystem to override root dentry on mount	19 years ago
sysv	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
udf	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
ufs	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
vfat	[PATCH] VFS: Permit filesystem to override root dentry on mount	19 years ago
xfs	[PATCH] for_each_possible_cpu: xfs	19 years ago
Kconfig	Merge branch 'audit.b21' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current	19 years ago
Kconfig.binfmt	…
Makefile	[PATCH] inotify (1/5): split kernel API from userspace support	19 years ago
aio.c	…
attr.c	…
bad_inode.c	…
binfmt_aout.c	…
binfmt_elf.c	[PATCH] remove steal_locks()	19 years ago
binfmt_elf_fdpic.c	…
binfmt_em86.c	…
binfmt_flat.c	[PATCH] binfmt_flat: don't check for EMFILE	19 years ago
binfmt_misc.c	[PATCH] VFS: Permit filesystem to override root dentry on mount	19 years ago
binfmt_script.c	…
binfmt_som.c	…
bio.c	[PATCH] Fix missing ret assignment in __bio_map_user() error path	19 years ago
block_dev.c	[PATCH] VFS: Permit filesystem to override root dentry on mount	19 years ago
buffer.c	…
char_dev.c	…
compat.c	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
compat_ioctl.c	…
dcache.c	[PATCH] VFS: Permit filesystem to override root dentry on mount	19 years ago
dcookies.c	…
direct-io.c	…
dnotify.c	…
dquot.c	…
drop_caches.c	…
eventpoll.c	[PATCH] VFS: Permit filesystem to override root dentry on mount	19 years ago
exec.c	[PATCH] remove steal_locks()	19 years ago
fcntl.c	…
fifo.c	[PATCH] pipe.c/fifo.c code cleanups	19 years ago
file.c	…
file_table.c	…
filesystems.c	…
fs-writeback.c	[PATCH] writeback: fix range handling	19 years ago
inode.c	…
inotify.c	[PATCH] inotify (4/5): allow watch removal from event handler	19 years ago
inotify_user.c	[PATCH] VFS: Permit filesystem to override root dentry on mount	19 years ago
ioctl.c	…
ioprio.c	…
libfs.c	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
locks.c	[PATCH] remove steal_locks()	19 years ago
mbcache.c	…
mpage.c	[PATCH] writeback: fix range handling	19 years ago
namei.c	[PATCH] log more info for directory entry change events	19 years ago
namespace.c	[PATCH] VFS: Permit filesystem to override root dentry on mount	19 years ago
nfsctl.c	…
open.c	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
pipe.c	[PATCH] VFS: Permit filesystem to override root dentry on mount	19 years ago
pnode.c	…
pnode.h	…
posix_acl.c	…
quota.c	…
quota_v1.c	…
quota_v2.c	…
read_write.c	[PATCH] splice: unlikely() optimizations	19 years ago
readdir.c	…
select.c	[PATCH] select: don't overflow if (SELECT_STACK_ALLOC % sizeof(long) != 0)	19 years ago
seq_file.c	…
splice.c	[PATCH] splice: redo page lookup if add_to_page_cache() returns -EEXIST	19 years ago
stat.c	[PATCH] powerpc: Wire up *at syscalls	19 years ago
super.c	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	19 years ago
sync.c	[PATCH] writeback: fix range handling	19 years ago
xattr.c	[PATCH] log more info for directory entry change events	19 years ago
xattr_acl.c	…