[PATCH 1/4] btrfs: prepare to drop gfp mask parameter from clear_extent_bit
From: David Sterba <dsterba@suse.com>
Date: 2017-10-31 17:49:46
Subsystem:
btrfs file system, filesystems (vfs and infrastructure), the rest · Maintainers:
Chris Mason, David Sterba, Alexander Viro, Christian Brauner, Linus Torvalds
Use __clear_extent_bit directly in case we want to pass unknown gfp flags. Otherwise all clear_extent_bit callers use GFP_NOFS, so we can sink them to the function and reduce argument count, at the cost that __clear_extent_bit has to be exported. Signed-off-by: David Sterba <dsterba@suse.com> --- fs/btrfs/extent_io.c | 6 +++--- fs/btrfs/extent_io.h | 12 ++++++++---- 2 files changed, 11 insertions(+), 7 deletions(-)
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 1dfd14678db8..2d16c609c12f 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c@@ -580,7 +580,7 @@ static void extent_io_tree_panic(struct extent_io_tree *tree, int err) * * This takes the tree lock, and returns 0 on success and < 0 on error. */ -static int __clear_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, +int __clear_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, unsigned bits, int wake, int delete, struct extent_state **cached_state, gfp_t mask, struct extent_changeset *changeset)
@@ -4244,9 +4244,9 @@ static int try_release_extent_state(struct extent_map_tree *map, * at this point we can safely clear everything except the * locked bit and the nodatasum bit */ - ret = clear_extent_bit(tree, start, end, + ret = __clear_extent_bit(tree, start, end, ~(EXTENT_LOCKED | EXTENT_NODATASUM), - 0, 0, NULL, mask); + 0, 0, NULL, mask, NULL); /* if clear_extent_bit failed for enomem reasons, * we can't allow the release to continue.
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index d8b27af7101e..09923d49b699 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h@@ -300,6 +300,10 @@ int clear_record_extent_bits(struct extent_io_tree *tree, u64 start, u64 end, int clear_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, unsigned bits, int wake, int delete, struct extent_state **cached, gfp_t mask); +int __clear_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, + unsigned bits, int wake, int delete, + struct extent_state **cached, gfp_t mask, + struct extent_changeset *changeset); static inline int unlock_extent(struct extent_io_tree *tree, u64 start, u64 end) {
@@ -310,8 +314,8 @@ static inline int unlock_extent(struct extent_io_tree *tree, u64 start, u64 end) static inline int unlock_extent_cached(struct extent_io_tree *tree, u64 start, u64 end, struct extent_state **cached, gfp_t mask) { - return clear_extent_bit(tree, start, end, EXTENT_LOCKED, 1, 0, cached, - mask); + return __clear_extent_bit(tree, start, end, EXTENT_LOCKED, 1, 0, cached, + mask, NULL); } static inline int clear_extent_bits(struct extent_io_tree *tree, u64 start,
@@ -341,8 +345,8 @@ static inline int set_extent_bits(struct extent_io_tree *tree, u64 start, static inline int clear_extent_uptodate(struct extent_io_tree *tree, u64 start, u64 end, struct extent_state **cached_state, gfp_t mask) { - return clear_extent_bit(tree, start, end, EXTENT_UPTODATE, 0, 0, - cached_state, mask); + return __clear_extent_bit(tree, start, end, EXTENT_UPTODATE, 0, 0, + cached_state, mask, NULL); } static inline int set_extent_dirty(struct extent_io_tree *tree, u64 start,
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2.14.0