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Btrfs: Add debugging checks to track down corrupted metadata

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2008-09-05 16:09:51 -04:00
parent 95819c0573
commit a1b32a5932
4 changed files with 49 additions and 34 deletions
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15
fs/btrfs/file.c
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@@ -39,9 +39,10 @@
#include "compat.h"
static int btrfs_copy_from_user(loff_t pos, int num_pages, int write_bytes,
struct page **prepared_pages,
const char __user * buf)
static int noinline btrfs_copy_from_user(loff_t pos, int num_pages,
int write_bytes,
struct page **prepared_pages,
const char __user * buf)
{
long page_fault = 0;
int i;
@@ -69,7 +70,7 @@ static int btrfs_copy_from_user(loff_t pos, int num_pages, int write_bytes,
return page_fault ? -EFAULT : 0;
}
static void btrfs_drop_pages(struct page **pages, size_t num_pages)
static void noinline btrfs_drop_pages(struct page **pages, size_t num_pages)
{
size_t i;
for (i = 0; i < num_pages; i++) {
@@ -359,7 +360,7 @@ out_unlock:
return err;
}
int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end)
int noinline btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end)
{
struct extent_map *em;
struct extent_map *split = NULL;
@@ -515,7 +516,7 @@ out:
* it is either truncated or split. Anything entirely inside the range
* is deleted from the tree.
*/
int btrfs_drop_extents(struct btrfs_trans_handle *trans,
int noinline btrfs_drop_extents(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct inode *inode,
u64 start, u64 end, u64 inline_limit, u64 *hint_byte)
{
@@ -785,7 +786,7 @@ out:
/*
* this gets pages into the page cache and locks them down
*/
static int prepare_pages(struct btrfs_root *root, struct file *file,
static int noinline prepare_pages(struct btrfs_root *root, struct file *file,
struct page **pages, size_t num_pages,
loff_t pos, unsigned long first_index,
unsigned long last_index, size_t write_bytes)