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Intel Mac OS X 10.11; rv:52.0) Gecko/20100101 Thunderbird/52.7.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US Sender: linux-xfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP growfs rewrites all secondary supers, and relabel should do so as well; factor out the code which does this for use by both operations. Signed-off-by: Eric Sandeen Reviewed-by: Darrick J. Wong --- fs/xfs/xfs_fsops.c | 130 +++++++++++++++++++++++++++++++---------------------- fs/xfs/xfs_fsops.h | 2 + 2 files changed, 79 insertions(+), 53 deletions(-) diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c index 5237927..8f2a73a 100644 --- a/fs/xfs/xfs_fsops.c +++ b/fs/xfs/xfs_fsops.c @@ -71,6 +71,79 @@ return bp; } +/* + * Copy the contents of the primary super to all backup supers. + * %agcount is currently existing AGs + * %new_ags is the number of new AGs to write out if we're growing the + * filesystem. + * We can't use mp->m_sb.sb_agcount here because growfs already updated it. + */ +int +xfs_update_secondary_supers( + xfs_mount_t *mp, + xfs_agnumber_t agcount, + xfs_agnumber_t new_ags) +{ + int error, saved_error; + xfs_agnumber_t agno; + xfs_buf_t *bp; + + error = saved_error = 0; + + /* update secondary superblocks. */ + for (agno = 1; agno < agcount + new_ags; agno++) { + error = 0; + /* + * new secondary superblocks need to be zeroed, not read from + * disk as the contents of the new area we are growing into is + * completely unknown. + */ + if (agno < agcount) { + error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, + XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)), + XFS_FSS_TO_BB(mp, 1), 0, &bp, + &xfs_sb_buf_ops); + } else { + bp = xfs_trans_get_buf(NULL, mp->m_ddev_targp, + XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)), + XFS_FSS_TO_BB(mp, 1), 0); + if (bp) { + bp->b_ops = &xfs_sb_buf_ops; + xfs_buf_zero(bp, 0, BBTOB(bp->b_length)); + } else + error = -ENOMEM; + } + + /* + * If we get an error reading or writing alternate superblocks, + * continue. xfs_repair chooses the "best" superblock based + * on most matches; if we break early, we'll leave more + * superblocks un-updated than updated, and xfs_repair may + * pick them over the properly-updated primary. + */ + if (error) { + xfs_warn(mp, + "error %d reading secondary superblock for ag %d", + error, agno); + saved_error = error; + continue; + } + xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb); + + error = xfs_bwrite(bp); + xfs_buf_relse(bp); + if (error) { + xfs_warn(mp, + "write error %d updating secondary superblock for ag %d", + error, agno); + saved_error = error; + continue; + } + } + + return saved_error ? saved_error : error; +} + static int xfs_growfs_data_private( xfs_mount_t *mp, /* mount point for filesystem */ @@ -86,7 +159,7 @@ xfs_buf_t *bp; int bucket; int dpct; - int error, saved_error = 0; + int error; xfs_agnumber_t nagcount; xfs_agnumber_t nagimax = 0; xfs_rfsblock_t nb, nb_mod; @@ -557,59 +630,10 @@ if (error && error != -ENOSPC) goto out; - /* update secondary superblocks. */ - for (agno = 1; agno < nagcount; agno++) { - error = 0; - /* - * new secondary superblocks need to be zeroed, not read from - * disk as the contents of the new area we are growing into is - * completely unknown. - */ - if (agno < oagcount) { - error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, - XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)), - XFS_FSS_TO_BB(mp, 1), 0, &bp, - &xfs_sb_buf_ops); - } else { - bp = xfs_trans_get_buf(NULL, mp->m_ddev_targp, - XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)), - XFS_FSS_TO_BB(mp, 1), 0); - if (bp) { - bp->b_ops = &xfs_sb_buf_ops; - xfs_buf_zero(bp, 0, BBTOB(bp->b_length)); - } else - error = -ENOMEM; - } - - /* - * If we get an error reading or writing alternate superblocks, - * continue. xfs_repair chooses the "best" superblock based - * on most matches; if we break early, we'll leave more - * superblocks un-updated than updated, and xfs_repair may - * pick them over the properly-updated primary. - */ - if (error) { - xfs_warn(mp, - "error %d reading secondary superblock for ag %d", - error, agno); - saved_error = error; - continue; - } - xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb); - - error = xfs_bwrite(bp); - xfs_buf_relse(bp); - if (error) { - xfs_warn(mp, - "write error %d updating secondary superblock for ag %d", - error, agno); - saved_error = error; - continue; - } - } - + /* Copy new geometry to all backup superblocks, old & new */ + error = xfs_update_secondary_supers(mp, oagcount, nagcount - oagcount); out: - return saved_error ? saved_error : error; + return error; error0: xfs_trans_cancel(tp); diff --git a/fs/xfs/xfs_fsops.h b/fs/xfs/xfs_fsops.h index 20484ed..ffc5377 100644 --- a/fs/xfs/xfs_fsops.h +++ b/fs/xfs/xfs_fsops.h @@ -18,6 +18,8 @@ #ifndef __XFS_FSOPS_H__ #define __XFS_FSOPS_H__ +extern int xfs_update_secondary_supers(xfs_mount_t *mp, xfs_agnumber_t agcount, + xfs_agnumber_t new_ags); extern int xfs_growfs_data(xfs_mount_t *mp, xfs_growfs_data_t *in); extern int xfs_growfs_log(xfs_mount_t *mp, xfs_growfs_log_t *in); extern int xfs_fs_counts(xfs_mount_t *mp, xfs_fsop_counts_t *cnt);