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b2858d7d16
linux/fs
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Miklos Szeredi b2858d7d16 splice: fix kmaps in default_file_splice_write() 
Unfortunately multiple kmap() within a single thread are deadlockable,
so writing out multiple buffers with writev() isn't possible.

Change the implementation so that it does a separate write() for each
buffer.  This actually simplifies the code a lot since the
splice_from_pipe() helper can be used.

This limitation is caused by HIGHMEM pages, and so only affects a
subset of architectures and configurations.  In the future it may be
worth to implement default_file_splice_write() in a more efficient way
on configs that allow it.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-05-19 11:37:46 +02:00
..
9p vfs: simple_set_mnt() should return void 2009-03-27 14:44:03 -04:00
adfs fs/adfs: return f_fsid for statfs(2) 2009-04-02 19:05:08 -07:00
affs fs/affs: return f_fsid for statfs(2) 2009-04-02 19:05:08 -07:00
afs AFS: Guard afs_file_readpage_read_complete() definition with CONFIG_AFS_FSCACHE 2009-04-17 09:55:19 -07:00
autofs Fix autofs_expire() 2009-04-20 23:01:15 -04:00
autofs4 autofs4: use memchr() in invalid_string() 2009-04-20 23:02:50 -04:00
befs befs: fix build on parisc 2009-04-08 10:21:43 -07:00
bfs fs/Kconfig: move bfs out 2009-01-22 13:15:57 +03:00
btrfs Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable 2009-04-21 14:12:58 -07:00
cachefiles CacheFiles: A cache that backs onto a mounted filesystem 2009-04-03 16:42:41 +01:00
cifs cifs: when renaming don't try to unlink negative dentry 2009-04-17 21:08:15 +00:00
coda splice: implement default splice_read method 2009-05-11 14:13:10 +02:00
configfs constify dentry_operations: configfs 2009-03-27 14:44:03 -04:00
cramfs fs/cramfs: return f_fsid for statfs(2) 2009-04-02 19:05:08 -07:00
debugfs debugfs: function to know if debugfs is initialized 2009-03-23 16:25:46 +01:00
devpts Merge code for single and multiple-instance mounts 2009-03-27 14:44:04 -04:00
dlm dlm: fix length calculation in compat code 2009-03-11 12:23:59 -05:00
ecryptfs eCryptfs: Larger buffer for encrypted symlink targets 2009-04-22 17:02:46 -05:00
efs fs/efs: return f_fsid for statfs(2) 2009-04-02 19:05:09 -07:00
exofs block: add rq->resid_len 2009-05-11 09:50:53 +02:00
exportfs Merge branch 'next' into for-linus 2008-12-25 11:40:09 +11:00
ext2 ext2: fix data corruption for racing writes 2009-04-13 15:04:33 -07:00
ext3 ext3: Try to avoid starting a transaction in writepage for data=writepage 2009-04-08 13:15:10 -04:00
ext4 Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 2009-04-24 08:37:40 -07:00
fat vfat: Note the NLS requirement 2009-04-17 09:32:11 -07:00
freevxfs fs/Kconfig: move vxfs out 2009-01-22 13:15:58 +03:00
fscache FS-Cache: Implement data I/O part of netfs API 2009-04-03 16:42:39 +01:00
fuse fuse: fix "direct_io" private mmap 2009-04-09 17:37:53 +02:00
gfs2 GFS2: Ensure that the inode goal block settings are updated 2009-04-23 10:07:37 +01:00
hfs hfs: fix memory leak when unmounting 2009-04-13 15:04:29 -07:00
hfsplus Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2009-04-02 21:09:10 -07:00
hostfs constify dentry_operations: misc filesystems 2009-03-27 14:44:00 -04:00
hpfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2009-04-02 21:09:10 -07:00
hppfs hppfs: hppfs_read_file() may return -ERROR 2009-04-02 19:04:53 -07:00
hugetlbfs hugetlbfs: return negative error code for bad mount option 2009-04-21 13:41:48 -07:00
isofs fs/isofs: return f_fsid for statfs(2) 2009-04-02 19:05:09 -07:00
jbd Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 2009-04-24 08:37:40 -07:00
jbd2 jbd2: use SWRITE_SYNC_PLUG when writing synchronous revoke records 2009-04-14 07:50:56 -04:00
jffs2 Merge git://git.infradead.org/mtd-2.6 2009-04-06 14:56:26 -07:00
jfs New helper - current_umask() 2009-03-31 23:00:26 -04:00
lockd Merge branch 'for-2.6.30' of git://linux-nfs.org/~bfields/linux 2009-04-06 13:25:56 -07:00
minix fs/minix: return f_fsid for statfs(2) 2009-04-02 19:05:09 -07:00
ncpfs ncpfs: use memdup_user() 2009-04-20 23:02:51 -04:00
nfs NFS: Fix the XDR iovec calculation in nfs3_xdr_setaclargs 2009-04-21 07:46:49 -07:00
nfs_common SUNRPC: nfsacl_encode/nfsacl_decode should be exported as GPL-only 2008-12-23 15:21:32 -05:00
nfsd Fix i_mutex vs. readdir handling in nfsd 2009-04-20 23:01:16 -04:00
nilfs2 nilfs2: fix possible mismatch of sufile counters on recovery 2009-04-13 09:53:52 +09:00
nls remove CONFIG_KMOD from fs 2008-10-17 02:38:36 +11:00
notify fs: avoid I_NEW inodes 2009-03-27 14:44:05 -04:00
ntfs ntfs: remove private wrapper of endian helpers 2009-04-01 08:59:18 -07:00
ocfs2 ocfs2: fix i_mutex locking in ocfs2_splice_to_file() 2009-04-15 12:10:12 +02:00
omfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2009-04-02 21:09:10 -07:00
openpromfs zero i_uid/i_gid on inode allocation 2009-01-05 11:54:28 -05:00
partitions Merge branch 'tracing/core-v2' into tracing-for-linus 2009-04-02 00:49:02 +02:00
proc [S390] /proc/stat idle field for idle cpus 2009-04-23 13:58:17 +02:00
qnx4 fs/qnx4: return f_fsid for statfs(2) 2009-04-02 19:05:10 -07:00
quota vfs: skip I_CLEAR state inodes 2009-04-02 19:04:48 -07:00
ramfs ramfs: fix double freeing s_fs_info on failed mount 2009-04-07 07:39:59 -07:00
reiserfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2009-04-02 21:09:10 -07:00
romfs ROMFS: Advance destination buffer pointer when reading from a blockdev 2009-04-24 13:28:31 -07:00
smbfs constify dentry_operations: misc filesystems 2009-03-27 14:44:00 -04:00
squashfs Merge branch 'kmemtrace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-04-06 13:30:00 -07:00
sysfs sysfs: use memdup_user() 2009-04-20 23:02:50 -04:00
sysv fs/sysv: return f_fsid for statfs(2) 2009-04-02 19:05:10 -07:00
ubifs Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6 2009-04-06 15:00:19 -07:00
udf udf: Don't write integrity descriptor too often 2009-04-02 13:36:28 +02:00
ufs fs/ufs: return f_fsid for statfs(2) 2009-04-02 19:05:10 -07:00
xfs xfs: use memdup_user() 2009-04-20 23:02:51 -04:00
aio.c aio: lookup_ioctx can return the wrong value when looking up a bogus context 2009-03-19 15:57:18 -07:00
anon_inodes.c constify dentry_operations: rest 2009-03-27 14:44:03 -04:00
attr.c vfs: Use lowercase names of quota functions 2009-03-26 02:18:35 +01:00
bad_inode.c kill ->dir_notify() 2008-12-31 18:07:43 -05:00
binfmt_aout.c sanitize ifdefs in binfmt_aout 2009-01-03 11:45:54 -08:00
binfmt_elf_fdpic.c bin_elf_fdpic: check the return value of clear_user 2009-04-02 19:05:01 -07:00
binfmt_elf.c Trim includes in binfmt_elf 2009-03-31 23:00:27 -04:00
binfmt_em86.c Allow recursion in binfmt_script and binfmt_misc 2008-10-16 11:21:38 -07:00
binfmt_flat.c FLAT: Don't attempt to expand the userspace stack to fill the space allocated 2009-01-08 12:04:47 +00:00
binfmt_misc.c fs/binfmt_misc.c: add terminating newline to /proc/sys/fs/binfmt_misc/status 2009-01-06 15:59:19 -08:00
binfmt_script.c Allow recursion in binfmt_script and binfmt_misc 2008-10-16 11:21:38 -07:00
binfmt_som.c Don't crap into descriptor table in binfmt_som 2009-03-31 23:00:28 -04:00
bio-integrity.c block: add private bio_set for bio integrity allocations 2009-03-24 12:35:17 +01:00
bio.c bio: always copy back data for copied kernel requests 2009-05-19 11:36:08 +02:00
block_dev.c block: implement blkdev_readpages 2009-04-28 07:37:33 +02:00
buffer.c Add block_write_full_page_endio for passing endio handler 2009-04-16 07:47:49 -07:00
char_dev.c fs: fix name overwrite in __register_chrdev_region() 2009-01-06 15:59:13 -08:00
compat_binfmt_elf.c
compat_ioctl.c fs/compat_ioctl: fix build when !BLOCK 2009-04-20 23:01:16 -04:00
compat.c do_execve() must not clear fs->in_exec if it was set by another thread 2009-04-24 07:39:45 -07:00
dcache.c No need for crossing to mountpoint in audit_tag_tree() 2009-04-20 23:01:15 -04:00
dcookies.c [CVE-2009-0029] System call wrapper special cases 2009-01-14 14:15:18 +01:00
direct-io.c dio: Remove code handling bio_alloc failure with __GFP_WAIT 2009-04-15 12:10:13 +02:00
drop_caches.c vfs: skip I_CLEAR state inodes 2009-04-02 19:04:48 -07:00
eventfd.c epoll keyed wakeups: make eventfd use keyed wakeups 2009-04-01 08:59:20 -07:00
eventpoll.c epoll keyed wakeups: teach epoll about hints coming with the wakeup key 2009-04-01 08:59:20 -07:00
exec.c check_unsafe_exec: s/lock_task_sighand/rcu_read_lock/ 2009-04-24 07:39:45 -07:00
fcntl.c Fix a lockdep warning in fasync_helper() 2009-03-30 08:00:24 -06:00
fifo.c [PATCH] introduce fmode_t, do annotations 2008-10-21 07:47:06 -04:00
file_table.c trivial: remove unused variable 'path' in alloc_file() 2009-03-30 15:22:03 +02:00
file.c
filesystems.c fs: Mark get_filesystem_list() as __init function. 2009-04-20 23:02:52 -04:00
fs_struct.c Get rid of indirect include of fs_struct.h 2009-03-31 23:00:27 -04:00
fs-writeback.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-04-03 15:24:35 -07:00
generic_acl.c New helper - current_umask() 2009-03-31 23:00:26 -04:00
inode.c splice: add helpers for locking pipe inode 2009-04-15 12:10:12 +02:00
internal.h New locking/refcounting for fs_struct 2009-03-31 23:00:26 -04:00
ioctl.c Rationalize fasync return values 2009-03-16 08:34:35 -06:00
ioprio.c [CVE-2009-0029] System call wrappers part 28 2009-01-14 14:15:30 +01:00
Kconfig nilfs2: update makefile and Kconfig 2009-04-07 08:31:16 -07:00
Kconfig.binfmt CORE_DUMP_DEFAULT_ELF_HEADERS depends on ELF_CORE 2009-01-09 16:54:41 -08:00
libfs.c kmemtrace, fs: uninline simple_transaction_set() 2009-04-03 12:09:09 +02:00
locks.c [CVE-2009-0029] System call wrappers part 16 2009-01-14 14:15:25 +01:00
Makefile nilfs2: update makefile and Kconfig 2009-04-07 08:31:16 -07:00
mbcache.c
mpage.c Remove two unneeded exports and make two symbols static in fs/mpage.c 2009-04-01 07:38:54 -04:00
namei.c Fix i_mutex vs. readdir handling in nfsd 2009-04-20 23:01:16 -04:00
namespace.c Touch all affected namespaces on propagation of mount 2009-04-20 23:01:15 -04:00
nfsctl.c [CVE-2009-0029] System call wrappers part 27 2009-01-14 14:15:29 +01:00
no-block.c
open.c Get rid of indirect include of fs_struct.h 2009-03-31 23:00:27 -04:00
pipe.c splice: implement default splice_read method 2009-05-11 14:13:10 +02:00
pnode.c
pnode.h
posix_acl.c CRED: Wrap task credential accesses in the filesystem subsystem 2008-11-14 10:39:05 +11:00
read_write.c splice: implement default splice_read method 2009-05-11 14:13:10 +02:00
read_write.h
readdir.c [CVE-2009-0029] System call wrappers part 32 2009-01-14 14:15:31 +01:00
select.c [CVE-2009-0029] System call wrappers part 32 2009-01-14 14:15:31 +01:00
seq_file.c cpumask: fix seq_bitmap_*() functions. 2009-03-30 22:05:11 +10:30
signalfd.c [CVE-2009-0029] System call wrappers part 31 2009-01-14 14:15:31 +01:00
splice.c splice: fix kmaps in default_file_splice_write() 2009-05-19 11:37:46 +02:00
stack.c
stat.c kill vfs_stat_fd / vfs_lstat_fd 2009-04-20 23:02:52 -04:00
super.c namespaces: move proc_net_get_sb to a generic fs/super.c helper 2009-04-07 08:31:09 -07:00
sync.c Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-quota-2.6 2009-03-27 14:48:34 -07:00
timerfd.c timerfd: add flags check 2009-02-18 15:37:53 -08:00
utimes.c [CVE-2009-0029] System call wrappers part 30 2009-01-14 14:15:30 +01:00
xattr_acl.c
xattr.c xattr: use memdup_user() 2009-04-20 23:02:50 -04:00