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authorNick Piggin <npiggin@suse.de>2007-10-16 01:25:07 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 09:42:55 -0700
commit89e107877b65bf6eff1d63a1302dee9a091586f5 (patch)
tree8a120a04c46f19229d1cf9b9c546f1818cf84c44 /mm/filemap.c
parent7765ec26ae1c01bb29bedf910e4efcced8cc81d2 (diff)
downloadconfigs-89e107877b65bf6eff1d63a1302dee9a091586f5.tar.gz
fs: new cont helpers
Rework the generic block "cont" routines to handle the new aops. Supporting cont_prepare_write would take quite a lot of code to support, so remove it instead (and we later convert all filesystems to use it). write_begin gets passed AOP_FLAG_CONT_EXPAND when called from generic_cont_expand, so filesystems can avoid the old hacks they used. Signed-off-by: Nick Piggin <npiggin@suse.de> Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/filemap.c')
-rw-r--r--mm/filemap.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index ca04226bf1d..195339b27e9 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1684,6 +1684,7 @@ size_t iov_iter_copy_from_user_atomic(struct page *page,
return copied;
}
+EXPORT_SYMBOL(iov_iter_copy_from_user_atomic);
/*
* This has the same sideeffects and return value as
@@ -1710,6 +1711,7 @@ size_t iov_iter_copy_from_user(struct page *page,
kunmap(page);
return copied;
}
+EXPORT_SYMBOL(iov_iter_copy_from_user);
static void __iov_iter_advance_iov(struct iov_iter *i, size_t bytes)
{
@@ -1741,6 +1743,7 @@ void iov_iter_advance(struct iov_iter *i, size_t bytes)
__iov_iter_advance_iov(i, bytes);
i->count -= bytes;
}
+EXPORT_SYMBOL(iov_iter_advance);
/*
* Fault in the first iovec of the given iov_iter, to a maximum length
@@ -1757,6 +1760,7 @@ int iov_iter_fault_in_readable(struct iov_iter *i, size_t bytes)
bytes = min(bytes, i->iov->iov_len - i->iov_offset);
return fault_in_pages_readable(buf, bytes);
}
+EXPORT_SYMBOL(iov_iter_fault_in_readable);
/*
* Return the count of just the current iov_iter segment.
@@ -1769,6 +1773,7 @@ size_t iov_iter_single_seg_count(struct iov_iter *i)
else
return min(i->count, iov->iov_len - i->iov_offset);
}
+EXPORT_SYMBOL(iov_iter_single_seg_count);
/*
* Performs necessary checks before doing a write