Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=fa8609da993b04dc2dd762173a6d0ab1a192e256 Commit: fa8609da993b04dc2dd762173a6d0ab1a192e256 Parent: 3896625d0badd53dbc34d584861a36ba7eb4613f Author: Andrew Morton <[EMAIL PROTECTED]> AuthorDate: Tue Jan 30 14:36:24 2007 -0800 Committer: Linus Torvalds <[EMAIL PROTECTED]> CommitDate: Tue Jan 30 16:01:35 2007 -0800
[PATCH] ntfs: kmap_atomic() atomicity fix The KM_BIO_SRC_IRQ kmap slot requires local irq protection. Acked-by: Anton Altaparmakov <[EMAIL PROTECTED]> Signed-off-by: Andrew Morton <[EMAIL PROTECTED]> Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]> --- fs/ntfs/aops.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/fs/ntfs/aops.c b/fs/ntfs/aops.c index 7b2c8f4..629e7ab 100644 --- a/fs/ntfs/aops.c +++ b/fs/ntfs/aops.c @@ -92,10 +92,12 @@ static void ntfs_end_buffer_async_read(struct buffer_head *bh, int uptodate) ofs = 0; if (file_ofs < init_size) ofs = init_size - file_ofs; + local_irq_save(flags); kaddr = kmap_atomic(page, KM_BIO_SRC_IRQ); memset(kaddr + bh_offset(bh) + ofs, 0, bh->b_size - ofs); kunmap_atomic(kaddr, KM_BIO_SRC_IRQ); + local_irq_restore(flags); flush_dcache_page(page); } } else { @@ -143,11 +145,13 @@ static void ntfs_end_buffer_async_read(struct buffer_head *bh, int uptodate) recs = PAGE_CACHE_SIZE / rec_size; /* Should have been verified before we got here... */ BUG_ON(!recs); + local_irq_save(flags); kaddr = kmap_atomic(page, KM_BIO_SRC_IRQ); for (i = 0; i < recs; i++) post_read_mst_fixup((NTFS_RECORD*)(kaddr + i * rec_size), rec_size); kunmap_atomic(kaddr, KM_BIO_SRC_IRQ); + local_irq_restore(flags); flush_dcache_page(page); if (likely(page_uptodate && !PageError(page))) SetPageUptodate(page); - To unsubscribe from this list: send the line "unsubscribe git-commits-head" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html