diff options
author | J. Bruce Fields <bfields@redhat.com> | 2010-12-17 13:29:07 -0500 |
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committer | J. Bruce Fields <bfields@redhat.com> | 2010-12-17 13:29:07 -0500 |
commit | ec66ee3797e5848356cf593c6ec7aabf30a00cf1 (patch) | |
tree | 7ed5c84cc914644ffa1cd1b6a2b45db53fc224e8 /fs/xfs/linux-2.6/xfs_aops.c | |
parent | 1205065764f2eda3216ebe213143f69891ee3460 (diff) | |
parent | b0c3844d8af6b9f3f18f31e1b0502fbefa2166be (diff) | |
download | op-kernel-dev-ec66ee3797e5848356cf593c6ec7aabf30a00cf1.zip op-kernel-dev-ec66ee3797e5848356cf593c6ec7aabf30a00cf1.tar.gz |
Merge commit 'v2.6.37-rc6' into for-2.6.38
Diffstat (limited to 'fs/xfs/linux-2.6/xfs_aops.c')
-rw-r--r-- | fs/xfs/linux-2.6/xfs_aops.c | 94 |
1 files changed, 40 insertions, 54 deletions
diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c index 7d287af..691f612 100644 --- a/fs/xfs/linux-2.6/xfs_aops.c +++ b/fs/xfs/linux-2.6/xfs_aops.c @@ -934,7 +934,6 @@ xfs_aops_discard_page( struct xfs_inode *ip = XFS_I(inode); struct buffer_head *bh, *head; loff_t offset = page_offset(page); - ssize_t len = 1 << inode->i_blkbits; if (!xfs_is_delayed_page(page, IO_DELAY)) goto out_invalidate; @@ -949,58 +948,14 @@ xfs_aops_discard_page( xfs_ilock(ip, XFS_ILOCK_EXCL); bh = head = page_buffers(page); do { - int done; - xfs_fileoff_t offset_fsb; - xfs_bmbt_irec_t imap; - int nimaps = 1; int error; - xfs_fsblock_t firstblock; - xfs_bmap_free_t flist; + xfs_fileoff_t start_fsb; if (!buffer_delay(bh)) goto next_buffer; - offset_fsb = XFS_B_TO_FSBT(ip->i_mount, offset); - - /* - * Map the range first and check that it is a delalloc extent - * before trying to unmap the range. Otherwise we will be - * trying to remove a real extent (which requires a - * transaction) or a hole, which is probably a bad idea... - */ - error = xfs_bmapi(NULL, ip, offset_fsb, 1, - XFS_BMAPI_ENTIRE, NULL, 0, &imap, - &nimaps, NULL); - - if (error) { - /* something screwed, just bail */ - if (!XFS_FORCED_SHUTDOWN(ip->i_mount)) { - xfs_fs_cmn_err(CE_ALERT, ip->i_mount, - "page discard failed delalloc mapping lookup."); - } - break; - } - if (!nimaps) { - /* nothing there */ - goto next_buffer; - } - if (imap.br_startblock != DELAYSTARTBLOCK) { - /* been converted, ignore */ - goto next_buffer; - } - WARN_ON(imap.br_blockcount == 0); - - /* - * Note: while we initialise the firstblock/flist pair, they - * should never be used because blocks should never be - * allocated or freed for a delalloc extent and hence we need - * don't cancel or finish them after the xfs_bunmapi() call. - */ - xfs_bmap_init(&flist, &firstblock); - error = xfs_bunmapi(NULL, ip, offset_fsb, 1, 0, 1, &firstblock, - &flist, &done); - - ASSERT(!flist.xbf_count && !flist.xbf_first); + start_fsb = XFS_B_TO_FSBT(ip->i_mount, offset); + error = xfs_bmap_punch_delalloc_range(ip, start_fsb, 1); if (error) { /* something screwed, just bail */ if (!XFS_FORCED_SHUTDOWN(ip->i_mount)) { @@ -1010,7 +965,7 @@ xfs_aops_discard_page( break; } next_buffer: - offset += len; + offset += 1 << inode->i_blkbits; } while ((bh = bh->b_this_page) != head); @@ -1505,11 +1460,42 @@ xfs_vm_write_failed( struct inode *inode = mapping->host; if (to > inode->i_size) { - struct iattr ia = { - .ia_valid = ATTR_SIZE | ATTR_FORCE, - .ia_size = inode->i_size, - }; - xfs_setattr(XFS_I(inode), &ia, XFS_ATTR_NOLOCK); + /* + * punch out the delalloc blocks we have already allocated. We + * don't call xfs_setattr() to do this as we may be in the + * middle of a multi-iovec write and so the vfs inode->i_size + * will not match the xfs ip->i_size and so it will zero too + * much. Hence we jus truncate the page cache to zero what is + * necessary and punch the delalloc blocks directly. + */ + struct xfs_inode *ip = XFS_I(inode); + xfs_fileoff_t start_fsb; + xfs_fileoff_t end_fsb; + int error; + + truncate_pagecache(inode, to, inode->i_size); + + /* + * Check if there are any blocks that are outside of i_size + * that need to be trimmed back. + */ + start_fsb = XFS_B_TO_FSB(ip->i_mount, inode->i_size) + 1; + end_fsb = XFS_B_TO_FSB(ip->i_mount, to); + if (end_fsb <= start_fsb) + return; + + xfs_ilock(ip, XFS_ILOCK_EXCL); + error = xfs_bmap_punch_delalloc_range(ip, start_fsb, + end_fsb - start_fsb); + if (error) { + /* something screwed, just bail */ + if (!XFS_FORCED_SHUTDOWN(ip->i_mount)) { + xfs_fs_cmn_err(CE_ALERT, ip->i_mount, + "xfs_vm_write_failed: unable to clean up ino %lld", + ip->i_ino); + } + } + xfs_iunlock(ip, XFS_ILOCK_EXCL); } } |