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| author |   Chris Mason <chris.mason@oracle.com> | 2007-11-06 15:09:29 -0500 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2008-09-25 11:03:57 -0400 |
| commit | e644d021e328d3902559e5db687383f2da85993c (patch) | |
| tree | 12fa85275a3333c709ddc03c2f4fd426b97a9dcf /fs/btrfs/struct-funcs.c | |
| parent | Btrfs: Optimize allocations as we need to mix data and metadata into one group (diff) | |
| download | linux-dev-e644d021e328d3902559e5db687383f2da85993c.tar.xz linux-dev-e644d021e328d3902559e5db687383f2da85993c.zip | |
Fix recursive KM_USER1 usage in btrfs_realloc_node
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/struct-funcs.c')
| -rw-r--r-- | fs/btrfs/struct-funcs.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/fs/btrfs/struct-funcs.c b/fs/btrfs/struct-funcs.c index cf68fcf9b552..c5715a60554c 100644 --- a/fs/btrfs/struct-funcs.c +++ b/fs/btrfs/struct-funcs.c @@ -95,3 +95,19 @@ void btrfs_set_##name(struct extent_buffer *eb, \ #include "ctree.h" +void btrfs_node_key(struct extent_buffer *eb, + struct btrfs_disk_key *disk_key, int nr) +{ + unsigned long ptr = btrfs_node_key_ptr_offset(nr); + if (eb->map_token && ptr >= eb->map_start && + ptr + sizeof(*disk_key) <= eb->map_start + eb->map_len) { + memcpy(disk_key, eb->kaddr + ptr - eb->map_start, + sizeof(*disk_key)); + return; + } else if (eb->map_token) { + unmap_extent_buffer(eb, eb->map_token, KM_USER1); + eb->map_token = NULL; + } + read_eb_member(eb, (struct btrfs_key_ptr *)ptr, + struct btrfs_key_ptr, key, disk_key); +} |