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| author | Chris Mason <chris.mason@oracle.com> | 2009-01-06 19:26:40 +0100 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2009-01-06 19:26:40 +0100 |
| commit | cc7172defcf253335b16cf703fe4ac1ade15e1b1 (patch) | |
| tree | 995f5404304502a0cb13f5fd4b7be24e42f19244 /fs/btrfs/inode.c | |
| parent | Btrfs: tree logging checksum fixes (diff) | |
| download | linux-cc7172defcf253335b16cf703fe4ac1ade15e1b1.tar.xz linux-cc7172defcf253335b16cf703fe4ac1ade15e1b1.zip | |
Btrfs: Don't use kmap_atomic(..., KM_IRQ0) during checksum verifies
Checksum verification happens in a helper thread, and there is no
need to mess with interrupts. This switches to kmap() instead.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/inode.c')
| -rw-r--r-- | fs/btrfs/inode.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 4e57fe68e4b9..cdb701165a05 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -1727,7 +1727,6 @@ static int btrfs_readpage_end_io_hook(struct page *page, u64 start, u64 end, int ret; struct btrfs_root *root = BTRFS_I(inode)->root; u32 csum = ~(u32)0; - unsigned long flags; if (PageChecked(page)) { ClearPageChecked(page); @@ -1749,8 +1748,7 @@ static int btrfs_readpage_end_io_hook(struct page *page, u64 start, u64 end, } else { ret = get_state_private(io_tree, start, &private); } - local_irq_save(flags); - kaddr = kmap_atomic(page, KM_IRQ0); + kaddr = kmap(page); if (ret) goto zeroit; @@ -1759,8 +1757,7 @@ static int btrfs_readpage_end_io_hook(struct page *page, u64 start, u64 end, if (csum != private) goto zeroit; - kunmap_atomic(kaddr, KM_IRQ0); - local_irq_restore(flags); + kunmap(page); good: /* if the io failure tree for this inode is non-empty, * check to see if we've recovered from a failed IO @@ -1775,8 +1772,7 @@ zeroit: (unsigned long long)private); memset(kaddr + offset, 1, end - start + 1); flush_dcache_page(page); - kunmap_atomic(kaddr, KM_IRQ0); - local_irq_restore(flags); + kunmap(page); if (private == 0) return 0; return -EIO; |