diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-05 18:52:54 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-05 18:52:54 -0800 |
commit | c54febae996d36c630f09209cd9983ecfda3fcad (patch) | |
tree | 35b2717dcd4e4ff2206cd468b5895afb16f49c8c /fs/gfs2/quota.c | |
parent | e42e4ba07bc72c0eb7c7ab3bf9e5076db90d0f37 (diff) | |
parent | eb8374e71f941a1b3c2ed6ea19dc809e7124dc5d (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw
* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw: (27 commits)
GFS2: Use DEFINE_SPINLOCK
GFS2: Fix use-after-free bug on umount (try #2)
Revert "GFS2: Fix use-after-free bug on umount"
GFS2: Streamline alloc calculations for writes
GFS2: Send useful information with uevent messages
GFS2: Fix use-after-free bug on umount
GFS2: Remove ancient, unused code
GFS2: Move four functions from super.c
GFS2: Fix bug in gfs2_lock_fs_check_clean()
GFS2: Send some sensible sysfs stuff
GFS2: Kill two daemons with one patch
GFS2: Move gfs2_recoverd into recovery.c
GFS2: Fix "truncate in progress" hang
GFS2: Clean up & move gfs2_quotad
GFS2: Add more detail to debugfs glock dumps
GFS2: Banish struct gfs2_rgrpd_host
GFS2: Move rg_free from gfs2_rgrpd_host to gfs2_rgrpd
GFS2: Move rg_igeneration into struct gfs2_rgrpd
GFS2: Banish struct gfs2_dinode_host
GFS2: Move i_size from gfs2_dinode_host and rename it to i_disksize
...
Diffstat (limited to 'fs/gfs2/quota.c')
-rw-r--r-- | fs/gfs2/quota.c | 113 |
1 files changed, 103 insertions, 10 deletions
diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c index 3e073f5144f..b08d09696b3 100644 --- a/fs/gfs2/quota.c +++ b/fs/gfs2/quota.c @@ -46,6 +46,8 @@ #include <linux/bio.h> #include <linux/gfs2_ondisk.h> #include <linux/lm_interface.h> +#include <linux/kthread.h> +#include <linux/freezer.h> #include "gfs2.h" #include "incore.h" @@ -94,7 +96,7 @@ static int qd_alloc(struct gfs2_sbd *sdp, int user, u32 id, struct gfs2_quota_data *qd; int error; - qd = kzalloc(sizeof(struct gfs2_quota_data), GFP_NOFS); + qd = kmem_cache_zalloc(gfs2_quotad_cachep, GFP_NOFS); if (!qd) return -ENOMEM; @@ -119,7 +121,7 @@ static int qd_alloc(struct gfs2_sbd *sdp, int user, u32 id, return 0; fail: - kfree(qd); + kmem_cache_free(gfs2_quotad_cachep, qd); return error; } @@ -158,7 +160,7 @@ static int qd_get(struct gfs2_sbd *sdp, int user, u32 id, int create, if (qd || !create) { if (new_qd) { gfs2_lvb_unhold(new_qd->qd_gl); - kfree(new_qd); + kmem_cache_free(gfs2_quotad_cachep, new_qd); } *qdp = qd; return 0; @@ -1013,7 +1015,7 @@ void gfs2_quota_change(struct gfs2_inode *ip, s64 change, if (gfs2_assert_warn(GFS2_SB(&ip->i_inode), change)) return; - if (ip->i_di.di_flags & GFS2_DIF_SYSTEM) + if (ip->i_diskflags & GFS2_DIF_SYSTEM) return; for (x = 0; x < al->al_qd_num; x++) { @@ -1100,15 +1102,15 @@ static void gfs2_quota_change_in(struct gfs2_quota_change_host *qc, const void * int gfs2_quota_init(struct gfs2_sbd *sdp) { struct gfs2_inode *ip = GFS2_I(sdp->sd_qc_inode); - unsigned int blocks = ip->i_di.di_size >> sdp->sd_sb.sb_bsize_shift; + unsigned int blocks = ip->i_disksize >> sdp->sd_sb.sb_bsize_shift; unsigned int x, slot = 0; unsigned int found = 0; u64 dblock; u32 extlen = 0; int error; - if (!ip->i_di.di_size || ip->i_di.di_size > (64 << 20) || - ip->i_di.di_size & (sdp->sd_sb.sb_bsize - 1)) { + if (!ip->i_disksize || ip->i_disksize > (64 << 20) || + ip->i_disksize & (sdp->sd_sb.sb_bsize - 1)) { gfs2_consist_inode(ip); return -EIO; } @@ -1195,7 +1197,7 @@ fail: return error; } -void gfs2_quota_scan(struct gfs2_sbd *sdp) +static void gfs2_quota_scan(struct gfs2_sbd *sdp) { struct gfs2_quota_data *qd, *safe; LIST_HEAD(dead); @@ -1222,7 +1224,7 @@ void gfs2_quota_scan(struct gfs2_sbd *sdp) gfs2_assert_warn(sdp, !qd->qd_bh_count); gfs2_lvb_unhold(qd->qd_gl); - kfree(qd); + kmem_cache_free(gfs2_quotad_cachep, qd); } } @@ -1257,7 +1259,7 @@ void gfs2_quota_cleanup(struct gfs2_sbd *sdp) gfs2_assert_warn(sdp, !qd->qd_bh_count); gfs2_lvb_unhold(qd->qd_gl); - kfree(qd); + kmem_cache_free(gfs2_quotad_cachep, qd); spin_lock(&sdp->sd_quota_spin); } @@ -1272,3 +1274,94 @@ void gfs2_quota_cleanup(struct gfs2_sbd *sdp) } } +static void quotad_error(struct gfs2_sbd *sdp, const char *msg, int error) +{ + if (error == 0 || error == -EROFS) + return; + if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) + fs_err(sdp, "gfs2_quotad: %s error %d\n", msg, error); +} + +static void quotad_check_timeo(struct gfs2_sbd *sdp, const char *msg, + int (*fxn)(struct gfs2_sbd *sdp), + unsigned long t, unsigned long *timeo, + unsigned int *new_timeo) +{ + if (t >= *timeo) { + int error = fxn(sdp); + quotad_error(sdp, msg, error); + *timeo = gfs2_tune_get_i(&sdp->sd_tune, new_timeo) * HZ; + } else { + *timeo -= t; + } +} + +static void quotad_check_trunc_list(struct gfs2_sbd *sdp) +{ + struct gfs2_inode *ip; + + while(1) { + ip = NULL; + spin_lock(&sdp->sd_trunc_lock); + if (!list_empty(&sdp->sd_trunc_list)) { + ip = list_entry(sdp->sd_trunc_list.next, + struct gfs2_inode, i_trunc_list); + list_del_init(&ip->i_trunc_list); + } + spin_unlock(&sdp->sd_trunc_lock); + if (ip == NULL) + return; + gfs2_glock_finish_truncate(ip); + } +} + +/** + * gfs2_quotad - Write cached quota changes into the quota file + * @sdp: Pointer to GFS2 superblock + * + */ + +int gfs2_quotad(void *data) +{ + struct gfs2_sbd *sdp = data; + struct gfs2_tune *tune = &sdp->sd_tune; + unsigned long statfs_timeo = 0; + unsigned long quotad_timeo = 0; + unsigned long t = 0; + DEFINE_WAIT(wait); + int empty; + + while (!kthread_should_stop()) { + + /* Update the master statfs file */ + quotad_check_timeo(sdp, "statfs", gfs2_statfs_sync, t, + &statfs_timeo, &tune->gt_statfs_quantum); + + /* Update quota file */ + quotad_check_timeo(sdp, "sync", gfs2_quota_sync, t, + "ad_timeo, &tune->gt_quota_quantum); + + /* FIXME: This should be turned into a shrinker */ + gfs2_quota_scan(sdp); + + /* Check for & recover partially truncated inodes */ + quotad_check_trunc_list(sdp); + + if (freezing(current)) + refrigerator(); + t = min(quotad_timeo, statfs_timeo); + + prepare_to_wait(&sdp->sd_quota_wait, &wait, TASK_UNINTERRUPTIBLE); + spin_lock(&sdp->sd_trunc_lock); + empty = list_empty(&sdp->sd_trunc_list); + spin_unlock(&sdp->sd_trunc_lock); + if (empty) + t -= schedule_timeout(t); + else + t = 0; + finish_wait(&sdp->sd_quota_wait, &wait); + } + + return 0; +} + |