From c9e98886776386f1f7828d9685e78cd341849867 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Tue, 4 Nov 2008 09:47:33 +0000 Subject: GFS2: Move i_size from gfs2_dinode_host and rename it to i_disksize This patch moved the i_size field from the gfs2_dinode_host and following the ext3 convention renames it i_disksize. Signed-off-by: Steven Whitehouse --- fs/gfs2/super.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'fs/gfs2/super.c') diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index c3ba3d9d0aa..f5cef2ad7ae 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -206,14 +206,14 @@ int gfs2_jdesc_check(struct gfs2_jdesc *jd) int ar; int error; - if (ip->i_di.di_size < (8 << 20) || ip->i_di.di_size > (1 << 30) || - (ip->i_di.di_size & (sdp->sd_sb.sb_bsize - 1))) { + if (ip->i_disksize < (8 << 20) || ip->i_disksize > (1 << 30) || + (ip->i_disksize & (sdp->sd_sb.sb_bsize - 1))) { gfs2_consist_inode(ip); return -EIO; } - jd->jd_blocks = ip->i_di.di_size >> sdp->sd_sb.sb_bsize_shift; + jd->jd_blocks = ip->i_disksize >> sdp->sd_sb.sb_bsize_shift; - error = gfs2_write_alloc_required(ip, 0, ip->i_di.di_size, &ar); + error = gfs2_write_alloc_required(ip, 0, ip->i_disksize, &ar); if (!error && ar) { gfs2_consist_inode(ip); error = -EIO; -- cgit v1.2.3-18-g5258 From cfc8b54922db7b647b6d88914dc7ef8c63b6671d Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Tue, 4 Nov 2008 10:25:13 +0000 Subject: GFS2: Move rg_free from gfs2_rgrpd_host to gfs2_rgrpd The second of three fields which need to move, in order to remove the struct gfs2_rgrpd_host. Signed-off-by: Steven Whitehouse --- fs/gfs2/super.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/gfs2/super.c') diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index f5cef2ad7ae..e76907691ad 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -468,7 +468,7 @@ static int statfs_slow_fill(struct gfs2_rgrpd *rgd, { gfs2_rgrp_verify(rgd); sc->sc_total += rgd->rd_data; - sc->sc_free += rgd->rd_rg.rg_free; + sc->sc_free += rgd->rd_free; sc->sc_dinodes += rgd->rd_rg.rg_dinodes; return 0; } -- cgit v1.2.3-18-g5258 From 73f749483ed18f3b5759909cc4187b1741f54b10 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Tue, 4 Nov 2008 10:32:57 +0000 Subject: GFS2: Banish struct gfs2_rgrpd_host This patch moves the final field so that we can get rid of struct gfs2_rgrpd_host, as promised some time ago. Also by rearranging the fields slightly, we are able to reduce the size of the gfs2_rgrpd structure at the same time. Signed-off-by: Steven Whitehouse --- fs/gfs2/super.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/gfs2/super.c') diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index e76907691ad..b85877062a4 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -469,7 +469,7 @@ static int statfs_slow_fill(struct gfs2_rgrpd *rgd, gfs2_rgrp_verify(rgd); sc->sc_total += rgd->rd_data; sc->sc_free += rgd->rd_free; - sc->sc_dinodes += rgd->rd_rg.rg_dinodes; + sc->sc_dinodes += rgd->rd_dinodes; return 0; } -- cgit v1.2.3-18-g5258 From b52896813c2f16bcc5c5b67bb3c3f75bc084439b Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Wed, 26 Nov 2008 12:49:26 +0000 Subject: GFS2: Fix bug in gfs2_lock_fs_check_clean() gfs2_lock_fs_check_clean() should not be calling gfs2_jindex_hold() since it doesn't work like rindex hold, despite the comment. That allows gfs2_jindex_hold() to be moved into ops_fstype.c where it can be made static. Signed-off-by: Steven Whitehouse --- fs/gfs2/super.c | 74 --------------------------------------------------------- 1 file changed, 74 deletions(-) (limited to 'fs/gfs2/super.c') diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index b85877062a4..3dd9f5788cb 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -33,76 +33,6 @@ #include "trans.h" #include "util.h" -/** - * gfs2_jindex_hold - Grab a lock on the jindex - * @sdp: The GFS2 superblock - * @ji_gh: the holder for the jindex glock - * - * This is very similar to the gfs2_rindex_hold() function, except that - * in general we hold the jindex lock for longer periods of time and - * we grab it far less frequently (in general) then the rgrp lock. - * - * Returns: errno - */ - -int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh) -{ - struct gfs2_inode *dip = GFS2_I(sdp->sd_jindex); - struct qstr name; - char buf[20]; - struct gfs2_jdesc *jd; - int error; - - name.name = buf; - - mutex_lock(&sdp->sd_jindex_mutex); - - for (;;) { - error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, ji_gh); - if (error) - break; - - name.len = sprintf(buf, "journal%u", sdp->sd_journals); - name.hash = gfs2_disk_hash(name.name, name.len); - - error = gfs2_dir_check(sdp->sd_jindex, &name, NULL); - if (error == -ENOENT) { - error = 0; - break; - } - - gfs2_glock_dq_uninit(ji_gh); - - if (error) - break; - - error = -ENOMEM; - jd = kzalloc(sizeof(struct gfs2_jdesc), GFP_KERNEL); - if (!jd) - break; - - INIT_LIST_HEAD(&jd->extent_list); - jd->jd_inode = gfs2_lookupi(sdp->sd_jindex, &name, 1); - if (!jd->jd_inode || IS_ERR(jd->jd_inode)) { - if (!jd->jd_inode) - error = -ENOENT; - else - error = PTR_ERR(jd->jd_inode); - kfree(jd); - break; - } - - spin_lock(&sdp->sd_jindex_spin); - jd->jd_jid = sdp->sd_journals++; - list_add_tail(&jd->jd_list, &sdp->sd_jindex_list); - spin_unlock(&sdp->sd_jindex_spin); - } - - mutex_unlock(&sdp->sd_jindex_mutex); - - return error; -} - /** * gfs2_jindex_free - Clear all the journal index information * @sdp: The GFS2 superblock @@ -580,10 +510,6 @@ static int gfs2_lock_fs_check_clean(struct gfs2_sbd *sdp, struct gfs2_log_header_host lh; int error; - error = gfs2_jindex_hold(sdp, &ji_gh); - if (error) - return error; - list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { lfcc = kmalloc(sizeof(struct lfcc), GFP_KERNEL); if (!lfcc) { -- cgit v1.2.3-18-g5258 From 2bfb6449b7a1f29a2a63e1d869103b5811c3b69f Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Wed, 26 Nov 2008 13:30:49 +0000 Subject: GFS2: Move four functions from super.c The functions which are being moved can all be marked static in their new locations, since they only have a single caller each. Their new locations are more logical than before and some of the functions are small enough that the compiler might well inline them. Signed-off-by: Steven Whitehouse --- fs/gfs2/super.c | 164 -------------------------------------------------------- 1 file changed, 164 deletions(-) (limited to 'fs/gfs2/super.c') diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 3dd9f5788cb..141b781f2fc 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -96,39 +96,6 @@ struct gfs2_jdesc *gfs2_jdesc_find(struct gfs2_sbd *sdp, unsigned int jid) return jd; } -void gfs2_jdesc_make_dirty(struct gfs2_sbd *sdp, unsigned int jid) -{ - struct gfs2_jdesc *jd; - - spin_lock(&sdp->sd_jindex_spin); - jd = jdesc_find_i(&sdp->sd_jindex_list, jid); - if (jd) - jd->jd_dirty = 1; - spin_unlock(&sdp->sd_jindex_spin); -} - -struct gfs2_jdesc *gfs2_jdesc_find_dirty(struct gfs2_sbd *sdp) -{ - struct gfs2_jdesc *jd; - int found = 0; - - spin_lock(&sdp->sd_jindex_spin); - - list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { - if (jd->jd_dirty) { - jd->jd_dirty = 0; - found = 1; - break; - } - } - spin_unlock(&sdp->sd_jindex_spin); - - if (!found) - jd = NULL; - - return jd; -} - int gfs2_jdesc_check(struct gfs2_jdesc *jd) { struct gfs2_inode *ip = GFS2_I(jd->jd_inode); @@ -353,137 +320,6 @@ out: return error; } -/** - * gfs2_statfs_i - Do a statfs - * @sdp: the filesystem - * @sg: the sg structure - * - * Returns: errno - */ - -int gfs2_statfs_i(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc) -{ - struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; - struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; - - spin_lock(&sdp->sd_statfs_spin); - - *sc = *m_sc; - sc->sc_total += l_sc->sc_total; - sc->sc_free += l_sc->sc_free; - sc->sc_dinodes += l_sc->sc_dinodes; - - spin_unlock(&sdp->sd_statfs_spin); - - if (sc->sc_free < 0) - sc->sc_free = 0; - if (sc->sc_free > sc->sc_total) - sc->sc_free = sc->sc_total; - if (sc->sc_dinodes < 0) - sc->sc_dinodes = 0; - - return 0; -} - -/** - * statfs_fill - fill in the sg for a given RG - * @rgd: the RG - * @sc: the sc structure - * - * Returns: 0 on success, -ESTALE if the LVB is invalid - */ - -static int statfs_slow_fill(struct gfs2_rgrpd *rgd, - struct gfs2_statfs_change_host *sc) -{ - gfs2_rgrp_verify(rgd); - sc->sc_total += rgd->rd_data; - sc->sc_free += rgd->rd_free; - sc->sc_dinodes += rgd->rd_dinodes; - return 0; -} - -/** - * gfs2_statfs_slow - Stat a filesystem using asynchronous locking - * @sdp: the filesystem - * @sc: the sc info that will be returned - * - * Any error (other than a signal) will cause this routine to fall back - * to the synchronous version. - * - * FIXME: This really shouldn't busy wait like this. - * - * Returns: errno - */ - -int gfs2_statfs_slow(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc) -{ - struct gfs2_holder ri_gh; - struct gfs2_rgrpd *rgd_next; - struct gfs2_holder *gha, *gh; - unsigned int slots = 64; - unsigned int x; - int done; - int error = 0, err; - - memset(sc, 0, sizeof(struct gfs2_statfs_change_host)); - gha = kcalloc(slots, sizeof(struct gfs2_holder), GFP_KERNEL); - if (!gha) - return -ENOMEM; - - error = gfs2_rindex_hold(sdp, &ri_gh); - if (error) - goto out; - - rgd_next = gfs2_rgrpd_get_first(sdp); - - for (;;) { - done = 1; - - for (x = 0; x < slots; x++) { - gh = gha + x; - - if (gh->gh_gl && gfs2_glock_poll(gh)) { - err = gfs2_glock_wait(gh); - if (err) { - gfs2_holder_uninit(gh); - error = err; - } else { - if (!error) - error = statfs_slow_fill( - gh->gh_gl->gl_object, sc); - gfs2_glock_dq_uninit(gh); - } - } - - if (gh->gh_gl) - done = 0; - else if (rgd_next && !error) { - error = gfs2_glock_nq_init(rgd_next->rd_gl, - LM_ST_SHARED, - GL_ASYNC, - gh); - rgd_next = gfs2_rgrpd_get_next(rgd_next); - done = 0; - } - - if (signal_pending(current)) - error = -ERESTARTSYS; - } - - if (done) - break; - - yield(); - } - - gfs2_glock_dq_uninit(&ri_gh); - -out: - kfree(gha); - return error; -} - struct lfcc { struct list_head list; struct gfs2_holder gh; -- cgit v1.2.3-18-g5258 From 3af165ac4d099385b12e3e75a9ee3ffd02da33e0 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Thu, 27 Nov 2008 08:27:28 +0000 Subject: GFS2: Fix use-after-free bug on umount There was a use-after-free with the GFS2 super block during umount. This patch moves almost all of the umount code from ->put_super into ->kill_sb, the only bit that cannot be moved being the glock hash clearing which has to remain as ->put_super due to umount ordering requirements. As a result its now obvious that the kfree is the final operation, whereas before it was hidden in ->put_super. Also gfs2_jindex_free is then only referenced from a single file so thats moved and marked static too. Signed-off-by: Steven Whitehouse --- fs/gfs2/super.c | 34 ---------------------------------- 1 file changed, 34 deletions(-) (limited to 'fs/gfs2/super.c') diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 141b781f2fc..f14658b2020 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -33,40 +33,6 @@ #include "trans.h" #include "util.h" -/** - * gfs2_jindex_free - Clear all the journal index information - * @sdp: The GFS2 superblock - * - */ - -void gfs2_jindex_free(struct gfs2_sbd *sdp) -{ - struct list_head list, *head; - struct gfs2_jdesc *jd; - struct gfs2_journal_extent *jext; - - spin_lock(&sdp->sd_jindex_spin); - list_add(&list, &sdp->sd_jindex_list); - list_del_init(&sdp->sd_jindex_list); - sdp->sd_journals = 0; - spin_unlock(&sdp->sd_jindex_spin); - - while (!list_empty(&list)) { - jd = list_entry(list.next, struct gfs2_jdesc, jd_list); - head = &jd->extent_list; - while (!list_empty(head)) { - jext = list_entry(head->next, - struct gfs2_journal_extent, - extent_list); - list_del(&jext->extent_list); - kfree(jext); - } - list_del(&jd->jd_list); - iput(jd->jd_inode); - kfree(jd); - } -} - static struct gfs2_jdesc *jdesc_find_i(struct list_head *head, unsigned int jid) { struct gfs2_jdesc *jd; -- cgit v1.2.3-18-g5258 From fefc03bfedeff2002f14e848ecb7c0cd77ee0b15 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Fri, 19 Dec 2008 15:32:06 +0000 Subject: Revert "GFS2: Fix use-after-free bug on umount" This reverts commit 78802499912f1ba31ce83a94c55b5a980f250a43. The original patch is causing problems in relation to order of operations at umount in relation to jdata files. I need to fix this a different way. Signed-off-by: Steven Whitehouse --- fs/gfs2/super.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) (limited to 'fs/gfs2/super.c') diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index f14658b2020..141b781f2fc 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -33,6 +33,40 @@ #include "trans.h" #include "util.h" +/** + * gfs2_jindex_free - Clear all the journal index information + * @sdp: The GFS2 superblock + * + */ + +void gfs2_jindex_free(struct gfs2_sbd *sdp) +{ + struct list_head list, *head; + struct gfs2_jdesc *jd; + struct gfs2_journal_extent *jext; + + spin_lock(&sdp->sd_jindex_spin); + list_add(&list, &sdp->sd_jindex_list); + list_del_init(&sdp->sd_jindex_list); + sdp->sd_journals = 0; + spin_unlock(&sdp->sd_jindex_spin); + + while (!list_empty(&list)) { + jd = list_entry(list.next, struct gfs2_jdesc, jd_list); + head = &jd->extent_list; + while (!list_empty(head)) { + jext = list_entry(head->next, + struct gfs2_journal_extent, + extent_list); + list_del(&jext->extent_list); + kfree(jext); + } + list_del(&jd->jd_list); + iput(jd->jd_inode); + kfree(jd); + } +} + static struct gfs2_jdesc *jdesc_find_i(struct list_head *head, unsigned int jid) { struct gfs2_jdesc *jd; -- cgit v1.2.3-18-g5258