From: "Darrick J. Wong" <darrick.wong@oracle.com> To: david@fromorbit.com, darrick.wong@oracle.com Cc: linux-fsdevel@vger.kernel.org, xfs@oss.sgi.com Subject: [PATCH 48/58] xfs: copy-on-write reflinked blocks when zeroing ranges of blocks Date: Tue, 06 Oct 2015 22:00:25 -0700 [thread overview] Message-ID: <20151007050025.30457.19562.stgit@birch.djwong.org> (raw) In-Reply-To: <20151007045443.30457.47038.stgit@birch.djwong.org> When we're writing zeroes to a reflinked block (such as when we're punching a reflinked range), we need to fork the the block and write to that, otherwise we can corrupt the other reflinks. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> --- fs/xfs/xfs_bmap_util.c | 25 +++++++- fs/xfs/xfs_reflink.c | 154 ++++++++++++++++++++++++++++++++++++++++++++++++ fs/xfs/xfs_reflink.h | 6 ++ 3 files changed, 183 insertions(+), 2 deletions(-) diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c index 245a34a..b054b28 100644 --- a/fs/xfs/xfs_bmap_util.c +++ b/fs/xfs/xfs_bmap_util.c @@ -41,6 +41,7 @@ #include "xfs_icache.h" #include "xfs_log.h" #include "xfs_rmap_btree.h" +#include "xfs_reflink.h" /* Kernel only BMAP related definitions and functions */ @@ -1095,7 +1096,9 @@ xfs_zero_remaining_bytes( xfs_buf_t *bp; xfs_mount_t *mp = ip->i_mount; int nimap; - int error = 0; + int error = 0, err2; + bool should_fork; + struct xfs_trans *tp; /* * Avoid doing I/O beyond eof - it's not necessary @@ -1136,8 +1139,14 @@ xfs_zero_remaining_bytes( if (lastoffset > endoff) lastoffset = endoff; + /* Do we need to CoW this block? */ + error = xfs_reflink_should_fork_block(ip, &imap, offset, + &should_fork); + if (error) + return error; + /* DAX can just zero the backing device directly */ - if (IS_DAX(VFS_I(ip))) { + if (IS_DAX(VFS_I(ip)) && !should_fork) { error = dax_zero_page_range(VFS_I(ip), offset, lastoffset - offset + 1, xfs_get_blocks_direct); @@ -1158,10 +1167,22 @@ xfs_zero_remaining_bytes( (offset - XFS_FSB_TO_B(mp, imap.br_startoff)), 0, lastoffset - offset + 1); + tp = NULL; + if (should_fork) { + error = xfs_reflink_fork_buf(ip, bp, offset_fsb, &tp); + if (error) + return error; + } + error = xfs_bwrite(bp); + + err2 = xfs_reflink_finish_fork_buf(ip, bp, offset_fsb, tp, + error, imap.br_startblock); xfs_buf_relse(bp); if (error) return error; + if (err2) + return err2; } return error; } diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c index 226e23f..f5eed2f 100644 --- a/fs/xfs/xfs_reflink.c +++ b/fs/xfs/xfs_reflink.c @@ -788,3 +788,157 @@ xfs_reflink_add_ioend( { list_add_tail(&eio->rlei_list, &ioend->io_reflink_endio_list); } + +/** + * xfs_reflink_fork_buf() - start a transaction to fork a buffer (if needed) + * + * @mp: XFS mount point + * @ip: XFS inode + * @bp: the buffer that we might need to fork + * @fileoff: file offset of the buffer + * @ptp: pointer to an XFS transaction + */ +int +xfs_reflink_fork_buf( + struct xfs_inode *ip, + struct xfs_buf *bp, + xfs_fileoff_t fileoff, + struct xfs_trans **ptp) +{ + struct xfs_mount *mp = ip->i_mount; + struct xfs_trans *tp; + xfs_fsblock_t fsbno; + xfs_fsblock_t new_fsbno; + xfs_agnumber_t agno; + xfs_agblock_t agbno; + uint resblks; + int error; + + fsbno = XFS_DADDR_TO_FSB(mp, XFS_BUF_ADDR(bp)); + agno = XFS_FSB_TO_AGNO(mp, fsbno); + agbno = XFS_FSB_TO_AGBNO(mp, fsbno); + CHECK_AG_NUMBER(mp, agno); + CHECK_AG_EXTENT(mp, agno, 1); + + /* + * Get ready to remap the thing... + */ + resblks = XFS_DIOSTRAT_SPACE_RES(mp, 3); + tp = xfs_trans_alloc(mp, XFS_TRANS_STRAT_WRITE); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_write, resblks, 0); + + /* + * check for running out of space + */ + if (error) { + /* + * Free the transaction structure. + */ + ASSERT(error == -ENOSPC || XFS_FORCED_SHUTDOWN(mp)); + goto out_cancel; + } + error = xfs_trans_reserve_quota(tp, mp, + ip->i_udquot, ip->i_gdquot, ip->i_pdquot, + resblks, 0, XFS_QMOPT_RES_REGBLKS); + if (error) + goto out_cancel; + + xfs_ilock(ip, XFS_ILOCK_EXCL); + xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); + + /* fork block, remap buffer */ + error = fork_one_block(mp, tp, ip, fsbno, &new_fsbno, fileoff); + if (error) + goto out_cancel; + + trace_xfs_reflink_fork_buf(ip, fileoff, fsbno, 1, new_fsbno); + + XFS_BUF_SET_ADDR(bp, XFS_FSB_TO_DADDR(mp, new_fsbno)); + *ptp = tp; + return error; + +out_cancel: + xfs_trans_cancel(tp); + trace_xfs_reflink_fork_buf_error(ip, error, _RET_IP_); + return error; +} + +/** + * xfs_reflink_finish_fork_buf() - finish forking a file buffer + * + * @ip: XFS inode + * @bp: the buffer that was forked + * @fileoff: file offset of the buffer + * @tp: transaction that was returned from xfs_reflink_fork_buf() + * @write_error: status code from writing the block + */ +int +xfs_reflink_finish_fork_buf( + struct xfs_inode *ip, + struct xfs_buf *bp, + xfs_fileoff_t fileoff, + struct xfs_trans *tp, + int write_error, + xfs_fsblock_t old_fsbno) +{ + struct xfs_mount *mp = ip->i_mount; + struct xfs_bmap_free free_list; + xfs_fsblock_t firstfsb; + xfs_fsblock_t fsbno; + struct xfs_bmbt_irec imaps[1]; + xfs_agnumber_t agno; + int nimaps = 1; + int done; + int error = write_error; + int committed; + struct xfs_owner_info oinfo; + + if (tp == NULL) + return 0; + + fsbno = XFS_DADDR_TO_FSB(mp, XFS_BUF_ADDR(bp)); + agno = XFS_FSB_TO_AGNO(mp, fsbno); + XFS_RMAP_INO_OWNER(&oinfo, ip->i_ino, XFS_DATA_FORK, fileoff); + if (write_error != 0) + goto out_write_error; + + trace_xfs_reflink_fork_buf(ip, fileoff, old_fsbno, 1, fsbno); + /* + * Remap the old blocks. + */ + xfs_bmap_init(&free_list, &firstfsb); + error = xfs_bunmapi(tp, ip, fileoff, 1, 0, 1, &firstfsb, &free_list, + &done); + if (error) + goto out_free; + ASSERT(done == 1); + + error = xfs_bmapi_write(tp, ip, fileoff, 1, XFS_BMAPI_REMAP, &fsbno, + 1, &imaps[0], &nimaps, &free_list); + if (error) + goto out_free; + + /* + * complete the transaction + */ + error = xfs_bmap_finish(&tp, &free_list, &committed); + if (error) + goto out_cancel; + + error = xfs_trans_commit(tp); + if (error) + goto out_error; + + return error; +out_free: + xfs_bmap_finish(&tp, &free_list, &committed); +out_write_error: + done = xfs_free_extent(tp, fsbno, 1, &oinfo); + if (error == 0) + error = done; +out_cancel: + xfs_trans_cancel(tp); +out_error: + trace_xfs_reflink_finish_fork_buf_error(ip, error, _RET_IP_); + return error; +} diff --git a/fs/xfs/xfs_reflink.h b/fs/xfs/xfs_reflink.h index b3e12d2..ce00cf6 100644 --- a/fs/xfs/xfs_reflink.h +++ b/fs/xfs/xfs_reflink.h @@ -38,4 +38,10 @@ extern void xfs_reflink_add_ioend(struct xfs_ioend *ioend, extern int xfs_reflink_should_fork_block(struct xfs_inode *ip, struct xfs_bmbt_irec *imap, xfs_off_t offset, bool *type); +extern int xfs_reflink_fork_buf(struct xfs_inode *ip, struct xfs_buf *bp, + xfs_fileoff_t fileoff, struct xfs_trans **ptp); +extern int xfs_reflink_finish_fork_buf(struct xfs_inode *ip, struct xfs_buf *bp, + xfs_fileoff_t fileoff, struct xfs_trans *tp, int write_error, + xfs_fsblock_t old_fsbno); + #endif /* __XFS_REFLINK_H */
WARNING: multiple messages have this Message-ID (diff)
From: "Darrick J. Wong" <darrick.wong@oracle.com> To: david@fromorbit.com, darrick.wong@oracle.com Cc: linux-fsdevel@vger.kernel.org, xfs@oss.sgi.com Subject: [PATCH 48/58] xfs: copy-on-write reflinked blocks when zeroing ranges of blocks Date: Tue, 06 Oct 2015 22:00:25 -0700 [thread overview] Message-ID: <20151007050025.30457.19562.stgit@birch.djwong.org> (raw) In-Reply-To: <20151007045443.30457.47038.stgit@birch.djwong.org> When we're writing zeroes to a reflinked block (such as when we're punching a reflinked range), we need to fork the the block and write to that, otherwise we can corrupt the other reflinks. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> --- fs/xfs/xfs_bmap_util.c | 25 +++++++- fs/xfs/xfs_reflink.c | 154 ++++++++++++++++++++++++++++++++++++++++++++++++ fs/xfs/xfs_reflink.h | 6 ++ 3 files changed, 183 insertions(+), 2 deletions(-) diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c index 245a34a..b054b28 100644 --- a/fs/xfs/xfs_bmap_util.c +++ b/fs/xfs/xfs_bmap_util.c @@ -41,6 +41,7 @@ #include "xfs_icache.h" #include "xfs_log.h" #include "xfs_rmap_btree.h" +#include "xfs_reflink.h" /* Kernel only BMAP related definitions and functions */ @@ -1095,7 +1096,9 @@ xfs_zero_remaining_bytes( xfs_buf_t *bp; xfs_mount_t *mp = ip->i_mount; int nimap; - int error = 0; + int error = 0, err2; + bool should_fork; + struct xfs_trans *tp; /* * Avoid doing I/O beyond eof - it's not necessary @@ -1136,8 +1139,14 @@ xfs_zero_remaining_bytes( if (lastoffset > endoff) lastoffset = endoff; + /* Do we need to CoW this block? */ + error = xfs_reflink_should_fork_block(ip, &imap, offset, + &should_fork); + if (error) + return error; + /* DAX can just zero the backing device directly */ - if (IS_DAX(VFS_I(ip))) { + if (IS_DAX(VFS_I(ip)) && !should_fork) { error = dax_zero_page_range(VFS_I(ip), offset, lastoffset - offset + 1, xfs_get_blocks_direct); @@ -1158,10 +1167,22 @@ xfs_zero_remaining_bytes( (offset - XFS_FSB_TO_B(mp, imap.br_startoff)), 0, lastoffset - offset + 1); + tp = NULL; + if (should_fork) { + error = xfs_reflink_fork_buf(ip, bp, offset_fsb, &tp); + if (error) + return error; + } + error = xfs_bwrite(bp); + + err2 = xfs_reflink_finish_fork_buf(ip, bp, offset_fsb, tp, + error, imap.br_startblock); xfs_buf_relse(bp); if (error) return error; + if (err2) + return err2; } return error; } diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c index 226e23f..f5eed2f 100644 --- a/fs/xfs/xfs_reflink.c +++ b/fs/xfs/xfs_reflink.c @@ -788,3 +788,157 @@ xfs_reflink_add_ioend( { list_add_tail(&eio->rlei_list, &ioend->io_reflink_endio_list); } + +/** + * xfs_reflink_fork_buf() - start a transaction to fork a buffer (if needed) + * + * @mp: XFS mount point + * @ip: XFS inode + * @bp: the buffer that we might need to fork + * @fileoff: file offset of the buffer + * @ptp: pointer to an XFS transaction + */ +int +xfs_reflink_fork_buf( + struct xfs_inode *ip, + struct xfs_buf *bp, + xfs_fileoff_t fileoff, + struct xfs_trans **ptp) +{ + struct xfs_mount *mp = ip->i_mount; + struct xfs_trans *tp; + xfs_fsblock_t fsbno; + xfs_fsblock_t new_fsbno; + xfs_agnumber_t agno; + xfs_agblock_t agbno; + uint resblks; + int error; + + fsbno = XFS_DADDR_TO_FSB(mp, XFS_BUF_ADDR(bp)); + agno = XFS_FSB_TO_AGNO(mp, fsbno); + agbno = XFS_FSB_TO_AGBNO(mp, fsbno); + CHECK_AG_NUMBER(mp, agno); + CHECK_AG_EXTENT(mp, agno, 1); + + /* + * Get ready to remap the thing... + */ + resblks = XFS_DIOSTRAT_SPACE_RES(mp, 3); + tp = xfs_trans_alloc(mp, XFS_TRANS_STRAT_WRITE); + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_write, resblks, 0); + + /* + * check for running out of space + */ + if (error) { + /* + * Free the transaction structure. + */ + ASSERT(error == -ENOSPC || XFS_FORCED_SHUTDOWN(mp)); + goto out_cancel; + } + error = xfs_trans_reserve_quota(tp, mp, + ip->i_udquot, ip->i_gdquot, ip->i_pdquot, + resblks, 0, XFS_QMOPT_RES_REGBLKS); + if (error) + goto out_cancel; + + xfs_ilock(ip, XFS_ILOCK_EXCL); + xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); + + /* fork block, remap buffer */ + error = fork_one_block(mp, tp, ip, fsbno, &new_fsbno, fileoff); + if (error) + goto out_cancel; + + trace_xfs_reflink_fork_buf(ip, fileoff, fsbno, 1, new_fsbno); + + XFS_BUF_SET_ADDR(bp, XFS_FSB_TO_DADDR(mp, new_fsbno)); + *ptp = tp; + return error; + +out_cancel: + xfs_trans_cancel(tp); + trace_xfs_reflink_fork_buf_error(ip, error, _RET_IP_); + return error; +} + +/** + * xfs_reflink_finish_fork_buf() - finish forking a file buffer + * + * @ip: XFS inode + * @bp: the buffer that was forked + * @fileoff: file offset of the buffer + * @tp: transaction that was returned from xfs_reflink_fork_buf() + * @write_error: status code from writing the block + */ +int +xfs_reflink_finish_fork_buf( + struct xfs_inode *ip, + struct xfs_buf *bp, + xfs_fileoff_t fileoff, + struct xfs_trans *tp, + int write_error, + xfs_fsblock_t old_fsbno) +{ + struct xfs_mount *mp = ip->i_mount; + struct xfs_bmap_free free_list; + xfs_fsblock_t firstfsb; + xfs_fsblock_t fsbno; + struct xfs_bmbt_irec imaps[1]; + xfs_agnumber_t agno; + int nimaps = 1; + int done; + int error = write_error; + int committed; + struct xfs_owner_info oinfo; + + if (tp == NULL) + return 0; + + fsbno = XFS_DADDR_TO_FSB(mp, XFS_BUF_ADDR(bp)); + agno = XFS_FSB_TO_AGNO(mp, fsbno); + XFS_RMAP_INO_OWNER(&oinfo, ip->i_ino, XFS_DATA_FORK, fileoff); + if (write_error != 0) + goto out_write_error; + + trace_xfs_reflink_fork_buf(ip, fileoff, old_fsbno, 1, fsbno); + /* + * Remap the old blocks. + */ + xfs_bmap_init(&free_list, &firstfsb); + error = xfs_bunmapi(tp, ip, fileoff, 1, 0, 1, &firstfsb, &free_list, + &done); + if (error) + goto out_free; + ASSERT(done == 1); + + error = xfs_bmapi_write(tp, ip, fileoff, 1, XFS_BMAPI_REMAP, &fsbno, + 1, &imaps[0], &nimaps, &free_list); + if (error) + goto out_free; + + /* + * complete the transaction + */ + error = xfs_bmap_finish(&tp, &free_list, &committed); + if (error) + goto out_cancel; + + error = xfs_trans_commit(tp); + if (error) + goto out_error; + + return error; +out_free: + xfs_bmap_finish(&tp, &free_list, &committed); +out_write_error: + done = xfs_free_extent(tp, fsbno, 1, &oinfo); + if (error == 0) + error = done; +out_cancel: + xfs_trans_cancel(tp); +out_error: + trace_xfs_reflink_finish_fork_buf_error(ip, error, _RET_IP_); + return error; +} diff --git a/fs/xfs/xfs_reflink.h b/fs/xfs/xfs_reflink.h index b3e12d2..ce00cf6 100644 --- a/fs/xfs/xfs_reflink.h +++ b/fs/xfs/xfs_reflink.h @@ -38,4 +38,10 @@ extern void xfs_reflink_add_ioend(struct xfs_ioend *ioend, extern int xfs_reflink_should_fork_block(struct xfs_inode *ip, struct xfs_bmbt_irec *imap, xfs_off_t offset, bool *type); +extern int xfs_reflink_fork_buf(struct xfs_inode *ip, struct xfs_buf *bp, + xfs_fileoff_t fileoff, struct xfs_trans **ptp); +extern int xfs_reflink_finish_fork_buf(struct xfs_inode *ip, struct xfs_buf *bp, + xfs_fileoff_t fileoff, struct xfs_trans *tp, int write_error, + xfs_fsblock_t old_fsbno); + #endif /* __XFS_REFLINK_H */ _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs
next prev parent reply other threads:[~2015-10-07 5:00 UTC|newest] Thread overview: 131+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-10-07 4:54 [RFCv3 00/58] xfs: add reverse-mapping, reflink, and dedupe support Darrick J. Wong 2015-10-07 4:54 ` Darrick J. Wong 2015-10-07 4:54 ` [PATCH 01/58] libxfs: make xfs_alloc_fix_freelist non-static Darrick J. Wong 2015-10-07 4:54 ` Darrick J. Wong 2015-10-07 4:54 ` [PATCH 02/58] xfs: fix log ticket type printing Darrick J. Wong 2015-10-07 4:54 ` Darrick J. Wong 2015-10-07 4:55 ` [PATCH 03/58] xfs: introduce rmap btree definitions Darrick J. Wong 2015-10-07 4:55 ` Darrick J. Wong 2015-10-07 4:55 ` [PATCH 04/58] xfs: add rmap btree stats infrastructure Darrick J. Wong 2015-10-07 4:55 ` [PATCH 05/58] xfs: rmap btree add more reserved blocks Darrick J. Wong 2015-10-07 4:55 ` Darrick J. Wong 2015-10-07 4:55 ` [PATCH 06/58] xfs: add owner field to extent allocation and freeing Darrick J. Wong 2015-10-07 4:55 ` Darrick J. Wong 2015-10-07 4:55 ` [PATCH 07/58] xfs: add extended " Darrick J. Wong 2015-10-07 4:55 ` Darrick J. Wong 2015-10-07 4:55 ` [PATCH 08/58] xfs: introduce rmap extent operation stubs Darrick J. Wong 2015-10-07 4:55 ` Darrick J. Wong 2015-10-07 4:55 ` [PATCH 09/58] xfs: extend rmap extent operation stubs to take full owner info Darrick J. Wong 2015-10-07 4:55 ` Darrick J. Wong 2015-10-07 4:55 ` [PATCH 10/58] xfs: define the on-disk rmap btree format Darrick J. Wong 2015-10-07 4:55 ` Darrick J. Wong 2015-10-07 4:55 ` [PATCH 11/58] xfs: enhance " Darrick J. Wong 2015-10-07 4:55 ` Darrick J. Wong 2015-10-07 4:56 ` [PATCH 12/58] xfs: add rmap btree growfs support Darrick J. Wong 2015-10-07 4:56 ` Darrick J. Wong 2015-10-07 4:56 ` [PATCH 13/58] xfs: enhance " Darrick J. Wong 2015-10-07 4:56 ` Darrick J. Wong 2015-10-07 4:56 ` [PATCH 14/58] xfs: rmap btree transaction reservations Darrick J. Wong 2015-10-07 4:56 ` Darrick J. Wong 2015-10-07 4:56 ` [PATCH 15/58] xfs: rmap btree requires more reserved free space Darrick J. Wong 2015-10-07 4:56 ` Darrick J. Wong 2015-10-07 4:56 ` [PATCH 16/58] libxfs: fix min freelist length calculation Darrick J. Wong 2015-10-07 4:56 ` Darrick J. Wong 2015-10-07 4:56 ` [PATCH 17/58] xfs: add rmap btree operations Darrick J. Wong 2015-10-07 4:57 ` [PATCH 18/58] xfs: enhance " Darrick J. Wong 2015-10-07 4:57 ` [PATCH 19/58] xfs: add an extent to the rmap btree Darrick J. Wong 2015-10-07 4:57 ` Darrick J. Wong 2015-10-07 4:57 ` [PATCH 20/58] xfs: add tracepoints for the rmap-mirrors-bmbt functions Darrick J. Wong 2015-10-07 4:57 ` Darrick J. Wong 2015-10-07 4:57 ` [PATCH 21/58] xfs: teach rmap_alloc how to deal with our larger rmap btree Darrick J. Wong 2015-10-07 4:57 ` Darrick J. Wong 2015-10-07 4:57 ` [PATCH 22/58] xfs: remove an extent from the " Darrick J. Wong 2015-10-07 4:57 ` Darrick J. Wong 2015-10-07 4:57 ` [PATCH 23/58] xfs: enhanced " Darrick J. Wong 2015-10-07 4:57 ` Darrick J. Wong 2015-10-07 4:57 ` [PATCH 24/58] xfs: add rmap btree insert and delete helpers Darrick J. Wong 2015-10-07 4:57 ` Darrick J. Wong 2015-10-07 4:57 ` [PATCH 25/58] xfs: bmap btree changes should update rmap btree Darrick J. Wong 2015-10-07 4:57 ` Darrick J. Wong 2015-10-21 21:39 ` Darrick J. Wong 2015-10-21 21:39 ` Darrick J. Wong 2015-10-07 4:57 ` [PATCH 26/58] xfs: add rmap btree geometry feature flag Darrick J. Wong 2015-10-07 4:57 ` Darrick J. Wong 2015-10-07 4:58 ` [PATCH 27/58] xfs: add rmap btree block detection to log recovery Darrick J. Wong 2015-10-07 4:58 ` Darrick J. Wong 2015-10-07 4:58 ` [PATCH 28/58] xfs: enable the rmap btree functionality Darrick J. Wong 2015-10-07 4:58 ` Darrick J. Wong 2015-10-07 4:58 ` [PATCH 29/58] xfs: disable XFS_IOC_SWAPEXT when rmap btree is enabled Darrick J. Wong 2015-10-07 4:58 ` Darrick J. Wong 2015-10-07 4:58 ` [PATCH 30/58] xfs: implement " Darrick J. Wong 2015-10-07 4:58 ` Darrick J. Wong 2015-10-07 4:58 ` [PATCH 31/58] libxfs: refactor short btree block verification Darrick J. Wong 2015-10-07 4:58 ` Darrick J. Wong 2015-10-07 4:58 ` [PATCH 32/58] xfs: don't update rmapbt when fixing agfl Darrick J. Wong 2015-10-07 4:58 ` Darrick J. Wong 2015-10-07 4:58 ` [PATCH 33/58] xfs: introduce refcount btree definitions Darrick J. Wong 2015-10-07 4:58 ` Darrick J. Wong 2015-10-07 4:58 ` [PATCH 34/58] xfs: add refcount btree stats infrastructure Darrick J. Wong 2015-10-07 4:58 ` Darrick J. Wong 2015-10-07 4:58 ` [PATCH 35/58] xfs: refcount btree add more reserved blocks Darrick J. Wong 2015-10-07 4:58 ` Darrick J. Wong 2015-10-07 4:59 ` [PATCH 36/58] xfs: define the on-disk refcount btree format Darrick J. Wong 2015-10-07 4:59 ` Darrick J. Wong 2015-10-07 4:59 ` [PATCH 37/58] xfs: define tracepoints for refcount/reflink activities Darrick J. Wong 2015-10-07 4:59 ` Darrick J. Wong 2015-10-07 4:59 ` [PATCH 38/58] xfs: add refcount btree support to growfs Darrick J. Wong 2015-10-07 4:59 ` Darrick J. Wong 2015-10-07 4:59 ` [PATCH 39/58] xfs: add refcount btree operations Darrick J. Wong 2015-10-07 4:59 ` Darrick J. Wong 2015-10-07 4:59 ` [PATCH 40/58] libxfs: adjust refcount of an extent of blocks in refcount btree Darrick J. Wong 2015-10-07 4:59 ` Darrick J. Wong 2015-10-27 19:05 ` Darrick J. Wong 2015-10-27 19:05 ` Darrick J. Wong 2015-10-30 20:56 ` Darrick J. Wong 2015-10-30 20:56 ` Darrick J. Wong 2015-10-07 4:59 ` [PATCH 41/58] libxfs: adjust refcount when unmapping file blocks Darrick J. Wong 2015-10-07 4:59 ` Darrick J. Wong 2015-10-07 4:59 ` [PATCH 42/58] xfs: add refcount btree block detection to log recovery Darrick J. Wong 2015-10-07 4:59 ` Darrick J. Wong 2015-10-07 4:59 ` [PATCH 43/58] xfs: map an inode's offset to an exact physical block Darrick J. Wong 2015-10-07 4:59 ` Darrick J. Wong 2015-10-07 4:59 ` [PATCH 44/58] xfs: add reflink feature flag to geometry Darrick J. Wong 2015-10-07 4:59 ` Darrick J. Wong 2015-10-07 5:00 ` [PATCH 45/58] xfs: create a separate workqueue for copy-on-write activities Darrick J. Wong 2015-10-07 5:00 ` Darrick J. Wong 2015-10-07 5:00 ` [PATCH 46/58] xfs: implement copy-on-write for reflinked blocks Darrick J. Wong 2015-10-07 5:00 ` Darrick J. Wong 2015-10-07 5:00 ` [PATCH 47/58] xfs: handle directio " Darrick J. Wong 2015-10-07 5:00 ` Darrick J. Wong 2015-10-07 5:00 ` Darrick J. Wong [this message] 2015-10-07 5:00 ` [PATCH 48/58] xfs: copy-on-write reflinked blocks when zeroing ranges of blocks Darrick J. Wong 2015-10-21 21:17 ` Darrick J. Wong 2015-10-21 21:17 ` Darrick J. Wong 2015-10-07 5:00 ` [PATCH 49/58] xfs: clear inode reflink flag when freeing blocks Darrick J. Wong 2015-10-07 5:00 ` Darrick J. Wong 2015-10-07 5:00 ` [PATCH 50/58] xfs: reflink extents from one file to another Darrick J. Wong 2015-10-07 5:00 ` Darrick J. Wong 2015-10-07 5:12 ` kbuild test robot 2015-10-07 5:12 ` kbuild test robot 2015-10-07 5:00 ` [PATCH 51/58] xfs: add clone file and clone range ioctls Darrick J. Wong 2015-10-07 5:00 ` Darrick J. Wong 2015-10-07 5:13 ` kbuild test robot 2015-10-07 5:13 ` kbuild test robot 2015-10-07 6:46 ` kbuild test robot 2015-10-07 6:46 ` kbuild test robot 2015-10-07 7:35 ` kbuild test robot 2015-10-07 7:35 ` kbuild test robot 2015-10-07 5:00 ` [PATCH 52/58] xfs: emulate the btrfs dedupe extent same ioctl Darrick J. Wong 2015-10-07 5:00 ` Darrick J. Wong 2015-10-07 5:00 ` [PATCH 53/58] xfs: teach fiemap about reflink'd extents Darrick J. Wong 2015-10-07 5:00 ` Darrick J. Wong 2015-10-07 5:01 ` [PATCH 54/58] xfs: swap inode reflink flags when swapping inode extents Darrick J. Wong 2015-10-07 5:01 ` Darrick J. Wong 2015-10-07 5:01 ` [PATCH 55/58] vfs: add a FALLOC_FL_UNSHARE mode to fallocate to unshare a range of blocks Darrick J. Wong 2015-10-07 5:01 ` Darrick J. Wong 2015-10-07 5:01 ` [PATCH 56/58] xfs: unshare a range of blocks via fallocate Darrick J. Wong 2015-10-07 5:01 ` Darrick J. Wong 2015-10-07 5:01 ` [PATCH 57/58] xfs: support XFS_XFLAG_REFLINK (and FS_NOCOW_FL) on reflink filesystems Darrick J. Wong 2015-10-07 5:01 ` Darrick J. Wong 2015-10-07 5:01 ` [PATCH 58/58] xfs: recognize the reflink feature bit Darrick J. Wong 2015-10-07 5:01 ` Darrick J. Wong
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