The patch titled
export iov_shorten for ext4's use
has been added to the -mm tree. Its filename is
export-iov_shorten-for-ext4s-use.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
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: export iov_shorten for ext4's use
From: Eric Sandeen <sandeen@xxxxxxxxxx>
ext4 needs to deal with 2 different max file offsets for block- and
extent-allocated file formats, whereas the s_maxbytes scheme can only deal
with one. So, for block-allocated files, we must catch and fix up
too-large offsets from within the filesystem.
Having iov_shorten exported allows such things as:
if (pos + length > sbi->s_bitmap_maxbytes) {
nr_segs = iov_shorten((struct iovec *)iov, nr_segs,
sbi->s_bitmap_maxbytes - pos);
}
to fix up too-large writes to these files in ext4_file_write().
Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx>
Cc: Mingming Cao <cmm@xxxxxxxxxx>
Cc: Theodore Ts'o <tytso@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/read_write.c | 1 +
1 file changed, 1 insertion(+)
diff -puN fs/read_write.c~export-iov_shorten-for-ext4s-use fs/read_write.c
--- a/fs/read_write.c~export-iov_shorten-for-ext4s-use
+++ a/fs/read_write.c
@@ -450,6 +450,7 @@ unsigned long iov_shorten(struct iovec *
}
return seg;
}
+EXPORT_SYMBOL(iov_shorten)
ssize_t do_sync_readv_writev(struct file *filp, const struct iovec *iov,
unsigned long nr_segs, size_t len, loff_t *ppos, iov_fn_t fn)
_
Patches currently in -mm which might be from sandeen@xxxxxxxxxx are
ecryptfs-fix-string-overflow-on-long-cipher-names.patch
ecryptfs-fix-unlocking-in-error-paths.patch
ecryptfs-redo-dgetmntget-on-dentry_open-failure.patch
hfs-handle-more-on-disk-corruptions-without-oopsing.patch
hfs-handle-more-on-disk-corruptions-without-oopsing-fix.patch
ext2-change-the-default-behaviour-on-error.patch
export-iov_shorten-for-ext4s-use.patch
ecryptfs-make-show_options-reflect-actual-mount-options.patch
ecryptfs-make-show_options-reflect-actual-mount-options-fix.patch
ecryptfs-remove-debug-as-mount-option-and-warn-if-set-via-modprobe.patch
ext3-change-the-default-behaviour-on-error.patch
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