The patch titled
fs: introduce write_begin, write_end, and perform_write aops (revoke)
has been added to the -mm tree. Its filename is
fs-introduce-write_begin-write_end-and-perform_write-aops-revoke.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: fs: introduce write_begin, write_end, and perform_write aops (revoke)
From: Nick Piggin <npiggin@xxxxxxx>
These are intended to replace prepare_write and commit_write with more
flexible alternatives that are also able to avoid the buffered write deadlock
problems efficiently (which prepare_write is unable to do).
Signed-off-by: Nick Piggin <npiggin@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
filemap.c | 0
fs/revoked_inode.c | 14 ++++++++++++++
2 files changed, 14 insertions(+)
diff -puN Documentation/filesystems/Locking~fs-introduce-write_begin-write_end-and-perform_write-aops-revoke Documentation/filesystems/Locking
diff -puN Documentation/filesystems/vfs.txt~fs-introduce-write_begin-write_end-and-perform_write-aops-revoke Documentation/filesystems/vfs.txt
diff -puN drivers/block/loop.c~fs-introduce-write_begin-write_end-and-perform_write-aops-revoke drivers/block/loop.c
diff -puN fs/buffer.c~fs-introduce-write_begin-write_end-and-perform_write-aops-revoke fs/buffer.c
diff -puN fs/libfs.c~fs-introduce-write_begin-write_end-and-perform_write-aops-revoke fs/libfs.c
diff -puN fs/namei.c~fs-introduce-write_begin-write_end-and-perform_write-aops-revoke fs/namei.c
diff -puN fs/revoked_inode.c~fs-introduce-write_begin-write_end-and-perform_write-aops-revoke fs/revoked_inode.c
--- a/fs/revoked_inode.c~fs-introduce-write_begin-write_end-and-perform_write-aops-revoke
+++ a/fs/revoked_inode.c
@@ -384,6 +384,20 @@ static int revoked_commit_write(struct f
return -EIO;
}
+static int revoked_write_begin(struct file *file, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned flags,
+ struct page **pagep, void **fsdata)
+{
+ return -EIO;
+}
+
+static int revoked_write_end(struct file *file, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned copied,
+ struct page *page, void *fsdata)
+{
+ return -EIO;
+}
+
static ssize_t revoked_direct_IO(int rw, struct kiocb *iocb,
const struct iovec *iov, loff_t offset,
unsigned long nr_segs)
diff -puN fs/splice.c~fs-introduce-write_begin-write_end-and-perform_write-aops-revoke fs/splice.c
diff -puN include/linux/buffer_head.h~fs-introduce-write_begin-write_end-and-perform_write-aops-revoke include/linux/buffer_head.h
diff -puN include/linux/fs.h~fs-introduce-write_begin-write_end-and-perform_write-aops-revoke include/linux/fs.h
diff -puN include/linux/pagemap.h~fs-introduce-write_begin-write_end-and-perform_write-aops-revoke include/linux/pagemap.h
diff -puN mm/filemap.c~fs-introduce-write_begin-write_end-and-perform_write-aops-revoke mm/filemap.c
_
Patches currently in -mm which might be from npiggin@xxxxxxx are
mm-fix-fault-vs-invalidate-race-for-linear-mappings.patch
mm-fix-fault-vs-invalidate-race-for-linear-mappings-fix.patch
mm-merge-populate-and-nopage-into-fault-fixes-nonlinear.patch
mm-merge-nopfn-into-fault.patch
mm-remove-legacy-cruft.patch
mm-debug-check-for-the-fault-vs-invalidate-race.patch
mm-fix-clear_page_dirty_for_io-vs-fault-race.patch
git-arm-master.patch
slob-rework-freelist-handling.patch
slob-remove-bigblock-tracking.patch
slob-improved-alignment-handling.patch
mm-revert-kernel_ds-buffered-write-optimisation.patch
revert-81b0c8713385ce1b1b9058e916edcf9561ad76d6.patch
revert-6527c2bdf1f833cc18e8f42bd97973d583e4aa83.patch
mm-clean-up-buffered-write-code.patch
mm-debug-write-deadlocks.patch
mm-trim-more-holes.patch
mm-buffered-write-cleanup.patch
mm-write-iovec-cleanup.patch
mm-fix-pagecache-write-deadlocks.patch
mm-buffered-write-iterator.patch
fs-fix-data-loss-on-error.patch
fs-introduce-write_begin-write_end-and-perform_write-aops.patch
mm-restore-kernel_ds-optimisations.patch
implement-simple-fs-aops.patch
block_dev-convert-to-new-aops.patch
ext2-convert-to-new-aops.patch
ext3-convert-to-new-aops.patch
ext4-convert-to-new-aops.patch
xfs-convert-to-new-aops.patch
fs-new-cont-helpers.patch
fat-convert-to-new-aops.patch
hfs-convert-to-new-aops.patch
hfsplus-convert-to-new-aops.patch
hpfs-convert-to-new-aops.patch
bfs-convert-to-new-aops.patch
qnx4-convert-to-new-aops.patch
reiserfs-use-generic-write.patch
reiserfs-convert-to-new-aops.patch
reiserfs-use-generic_cont_expand_simple.patch
with-reiserfs-no-longer-using-the-weird-generic_cont_expand-remove-it-completely.patch
nfs-convert-to-new-aops.patch
smb-convert-to-new-aops.patch
fuse-convert-to-new-aops.patch
hostfs-convert-to-new-aops.patch
jffs2-convert-to-new-aops.patch
ufs-convert-to-new-aops.patch
udf-convert-to-new-aops.patch
sysv-convert-to-new-aops.patch
minix-convert-to-new-aops.patch
jfs-convert-to-new-aops.patch
mm-document-fault_data-and-flags.patch
fs-introduce-some-page-buffer-invariants.patch
fs-introduce-write_begin-write_end-and-perform_write-aops-revoke.patch
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