#define DEBUG_SUBSYSTEM S_FILTER
+#include <linux/init.h>
+#include <linux/module.h>
#include <linux/fs.h>
#include <linux/jbd.h>
#include <linux/slab.h>
#include <linux/quotaops.h>
#include <linux/ext3_fs.h>
#include <linux/ext3_jbd.h>
+#include <linux/ext3_extents.h>
#include <linux/version.h>
-/* XXX ugh */
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
- #include <linux/ext3_xattr.h>
+#include <linux/ext3_xattr.h>
#else
- #include <linux/../../fs/ext3/xattr.h>
+#include <ext3/xattr.h>
#endif
-#include <linux/kp30.h>
+
+#include <libcfs/kp30.h>
#include <linux/lustre_fsfilt.h>
#include <linux/obd.h>
#include <linux/obd_class.h>
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
#include <linux/module.h>
+#include <linux/iobuf.h>
+#endif
+
+
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,7))
+# define lock_24kernel() lock_kernel()
+# define unlock_24kernel() unlock_kernel()
+#else
+# define lock_24kernel() do {} while (0)
+# define unlock_24kernel() do {} while (0)
+#endif
static kmem_cache_t *fcb_cache;
static atomic_t fcb_cache_count = ATOMIC_INIT(0);
struct journal_callback cb_jcb; /* jbd private data - MUST BE FIRST */
fsfilt_cb_t cb_func; /* MDS/OBD completion function */
struct obd_device *cb_obd; /* MDS/OBD completion device */
- __u64 cb_last_rcvd; /* MDS/OST last committed operation */
+ __u64 cb_last_num; /* MDS/OST last committed operation */
void *cb_data; /* MDS/OST completion function data */
};
#ifndef EXT3_XATTR_INDEX_TRUSTED /* temporary until we hit l28 kernel */
#define EXT3_XATTR_INDEX_TRUSTED 4
#endif
-#define XATTR_LUSTRE_MDS_LOV_EA "lov"
-#define EXT3_XATTR_INDEX_LUSTRE 5 /* old */
-#define XATTR_LUSTRE_MDS_OBJID "system.lustre_mds_objid" /* old */
+#define XATTR_LUSTRE_MDS_LOV_EA "lov"
+#define XATTR_LUSTRE_MDS_MEA_EA "mea"
+#define XATTR_LUSTRE_MDS_MID_EA "mid"
+#define XATTR_LUSTRE_MDS_SID_EA "sid"
/*
* We don't currently need any additional blocks for rmdir and
* the inode (which we will be changing anyways as part of this
* transaction).
*/
-static void *fsfilt_ext3_start(struct inode *inode, int op, void *desc_private)
+static void *fsfilt_ext3_start(struct inode *inode, int op, void *desc_private,
+ int logs)
{
/* For updates to the last recieved file */
- int nblocks = EXT3_DATA_TRANS_BLOCKS;
+ int nblocks = EXT3_SINGLEDATA_TRANS_BLOCKS;
+ journal_t *journal;
void *handle;
if (current->journal_info) {
- CDEBUG(D_INODE, "increasing refcount on %p\n", current->journal_info);
+ CDEBUG(D_INODE, "increasing refcount on %p\n",
+ current->journal_info);
goto journal_start;
}
- switch(op) {
- case FSFILT_OP_CREATE_LOG:
- nblocks += EXT3_INDEX_EXTRA_TRANS_BLOCKS+EXT3_DATA_TRANS_BLOCKS;
- op = FSFILT_OP_CREATE;
- break;
- case FSFILT_OP_UNLINK_LOG:
- nblocks += EXT3_INDEX_EXTRA_TRANS_BLOCKS+EXT3_DATA_TRANS_BLOCKS;
- op = FSFILT_OP_UNLINK;
- break;
- }
-
+ if (logs)
+ nblocks += (EXT3_INDEX_EXTRA_TRANS_BLOCKS +
+ EXT3_SINGLEDATA_TRANS_BLOCKS) * logs;
+
switch(op) {
case FSFILT_OP_RMDIR:
case FSFILT_OP_UNLINK:
+ /* delete one file + create/update logs for each stripe */
nblocks += EXT3_DELETE_TRANS_BLOCKS;
+ /*nblocks += (EXT3_INDEX_EXTRA_TRANS_BLOCKS +
+ EXT3_SINGLEDATA_TRANS_BLOCKS) * logs;*/
break;
case FSFILT_OP_RENAME:
/* modify additional directory */
- nblocks += EXT3_DATA_TRANS_BLOCKS;
+ nblocks += EXT3_SINGLEDATA_TRANS_BLOCKS;
/* no break */
case FSFILT_OP_SYMLINK:
/* additional block + block bitmap + GDT for long symlink */
nblocks += 3;
/* no break */
case FSFILT_OP_CREATE:
+ /* create/update logs for each stripe */
+ /*nblocks += (EXT3_INDEX_EXTRA_TRANS_BLOCKS +
+ EXT3_SINGLEDATA_TRANS_BLOCKS) * logs;*/
+ /* no break */
case FSFILT_OP_MKDIR:
case FSFILT_OP_MKNOD:
/* modify one inode + block bitmap + GDT */
/* no break */
case FSFILT_OP_LINK:
/* modify parent directory */
- nblocks += EXT3_INDEX_EXTRA_TRANS_BLOCKS+EXT3_DATA_TRANS_BLOCKS;
+ nblocks += EXT3_INDEX_EXTRA_TRANS_BLOCKS +
+ EXT3_DATA_TRANS_BLOCKS;
break;
case FSFILT_OP_SETATTR:
/* Setattr on inode */
nblocks += 1;
break;
+ case FSFILT_OP_CANCEL_UNLINK:
+ /* blocks for log header bitmap update OR
+ * blocks for catalog header bitmap update + unlink of logs */
+ nblocks = (LLOG_CHUNK_SIZE >> inode->i_blkbits) +
+ EXT3_DELETE_TRANS_BLOCKS * logs;
+ break;
+ case FSFILT_OP_NOOP:
+ nblocks += EXT3_INDEX_EXTRA_TRANS_BLOCKS+EXT3_DATA_TRANS_BLOCKS;
+ break;
default: CERROR("unknown transaction start op %d\n", op);
- LBUG();
+ LBUG();
}
LASSERT(current->journal_info == desc_private);
+ journal = EXT3_SB(inode->i_sb)->s_journal;
+ if (nblocks > journal->j_max_transaction_buffers) {
+ CERROR("too many credits %d for op %ux%u using %d instead\n",
+ nblocks, op, logs, journal->j_max_transaction_buffers);
+ nblocks = journal->j_max_transaction_buffers;
+ }
journal_start:
- lock_kernel();
+ LASSERTF(nblocks > 0, "can't start %d credit transaction\n", nblocks);
+ lock_24kernel();
handle = journal_start(EXT3_JOURNAL(inode), nblocks);
- unlock_kernel();
+ unlock_24kernel();
if (!IS_ERR(handle))
LASSERT(current->journal_info == handle);
+ else
+ CERROR("error starting handle for op %u (%u credits): rc %ld\n",
+ op, nblocks, PTR_ERR(handle));
return handle;
}
*
* 1 EXT3_DATA_TRANS_BLOCKS for the last_rcvd update.
*/
-static int fsfilt_ext3_credits_needed(int objcount, struct fsfilt_objinfo *fso)
+static int fsfilt_ext3_credits_needed(int objcount, struct fsfilt_objinfo *fso,
+ int niocount, struct niobuf_local *nb)
{
struct super_block *sb = fso->fso_dentry->d_inode->i_sb;
- int blockpp = 1 << (PAGE_CACHE_SHIFT - sb->s_blocksize_bits);
- int addrpp = EXT3_ADDR_PER_BLOCK(sb) * blockpp;
- int nbitmaps = 0;
- int ngdblocks = 0;
- int needed = objcount + 1;
- int i;
-
- for (i = 0; i < objcount; i++, fso++) {
- int nblocks = fso->fso_bufcnt * blockpp;
- int ndindirect = min(nblocks, addrpp + 1);
- int nindir = nblocks + ndindirect + 1;
-
- nbitmaps += nindir + nblocks;
- ngdblocks += nindir + nblocks;
+ __u64 next_indir;
+ const int blockpp = 1 << (PAGE_CACHE_SHIFT - sb->s_blocksize_bits);
+ int nbitmaps = 0, ngdblocks;
+ int needed = objcount + 1; /* inodes + superblock */
+ int i, j;
+
+ for (i = 0, j = 0; i < objcount; i++, fso++) {
+ /* two or more dindirect blocks in case we cross boundary */
+ int ndind = (long)((nb[j + fso->fso_bufcnt - 1].offset -
+ nb[j].offset) >>
+ sb->s_blocksize_bits) /
+ (EXT3_ADDR_PER_BLOCK(sb) * EXT3_ADDR_PER_BLOCK(sb));
+ nbitmaps += min(fso->fso_bufcnt, ndind > 0 ? ndind : 2);
+
+ /* leaf, indirect, tindirect blocks for first block */
+ nbitmaps += blockpp + 2;
+
+ j += fso->fso_bufcnt;
+ }
- needed += nindir;
+ next_indir = nb[0].offset +
+ (EXT3_ADDR_PER_BLOCK(sb) << sb->s_blocksize_bits);
+ for (i = 1; i < niocount; i++) {
+ if (nb[i].offset >= next_indir) {
+ nbitmaps++; /* additional indirect */
+ next_indir = nb[i].offset +
+ (EXT3_ADDR_PER_BLOCK(sb)<<sb->s_blocksize_bits);
+ } else if (nb[i].offset != nb[i - 1].offset + sb->s_blocksize) {
+ nbitmaps++; /* additional indirect */
+ }
+ nbitmaps += blockpp; /* each leaf in different group? */
}
- /* Assumes ext3 and ext3 have same sb_info layout at the start. */
+ ngdblocks = nbitmaps;
if (nbitmaps > EXT3_SB(sb)->s_groups_count)
nbitmaps = EXT3_SB(sb)->s_groups_count;
if (ngdblocks > EXT3_SB(sb)->s_gdb_count)
* the pages have been written.
*/
static void *fsfilt_ext3_brw_start(int objcount, struct fsfilt_objinfo *fso,
- int niocount, void *desc_private)
+ int niocount, struct niobuf_local *nb,
+ void *desc_private, int logs)
{
journal_t *journal;
handle_t *handle;
LASSERT(current->journal_info == desc_private);
journal = EXT3_SB(fso->fso_dentry->d_inode->i_sb)->s_journal;
- needed = fsfilt_ext3_credits_needed(objcount, fso);
+ needed = fsfilt_ext3_credits_needed(objcount, fso, niocount, nb);
/* The number of blocks we could _possibly_ dirty can very large.
* We reduce our request if it is absurd (and we couldn't get that
needed = journal->j_max_transaction_buffers;
}
- lock_kernel();
+ LASSERTF(needed > 0, "can't start %d credit transaction\n", needed);
+ lock_24kernel();
handle = journal_start(journal, needed);
- unlock_kernel();
+ unlock_24kernel();
if (IS_ERR(handle)) {
CERROR("can't get handle for %d credits: rc = %ld\n", needed,
PTR_ERR(handle));
RETURN(handle);
}
-static int fsfilt_ext3_commit(struct inode *inode, void *h, int force_sync)
+static int fsfilt_ext3_commit(struct super_block *sb, struct inode *inode,
+ void *h, int force_sync)
{
int rc;
handle_t *handle = h;
if (force_sync)
handle->h_sync = 1; /* recovery likes this */
- lock_kernel();
+ lock_24kernel();
rc = journal_stop(handle);
- unlock_kernel();
+ unlock_24kernel();
- // LASSERT(current->journal_info == NULL);
return rc;
}
static int fsfilt_ext3_commit_async(struct inode *inode, void *h,
- void **wait_handle)
+ void **wait_handle)
{
+ unsigned long tid;
transaction_t *transaction;
- unsigned long tid, rtid;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
+ unsigned long rtid;
+#endif
handle_t *handle = h;
journal_t *journal;
int rc;
unlock_kernel();
return rc;
}
-
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
rtid = log_start_commit(journal, transaction);
if (rtid != tid)
CERROR("strange race: %lu != %lu\n",
(unsigned long) tid, (unsigned long) rtid);
+#else
+ log_start_commit(journal, transaction->t_tid);
+#endif
unlock_kernel();
*wait_handle = (void *) tid;
tid_t tid = (tid_t)(long)h;
CDEBUG(D_INODE, "commit wait: %lu\n", (unsigned long) tid);
- if (is_journal_aborted(EXT3_JOURNAL(inode)))
+ if (is_journal_aborted(EXT3_JOURNAL(inode)))
return -EIO;
log_wait_commit(EXT3_JOURNAL(inode), tid);
RETURN(rc);
}
-#undef INLINE_EA
-#undef OLD_EA
-static int fsfilt_ext3_set_md(struct inode *inode, void *handle,
- void *lmm, int lmm_size)
+static int fsfilt_ext3_set_xattr(struct inode * inode, void *handle, char *name,
+ void *buffer, int buffer_size)
{
- int rc, old_ea = 0;
+ int rc = 0;
-#ifdef INLINE_EA /* can go away before 1.0 - just for testing bug 2097 now */
- /* Nasty hack city - store stripe MD data in the block pointers if
- * it will fit, because putting it in an EA currently kills the MDS
- * performance. We'll fix this with "fast EAs" in the future.
- */
- if (inode->i_blocks == 0 && lmm_size <= sizeof(EXT3_I(inode)->i_data) -
- sizeof(EXT3_I(inode)->i_data[0])) {
- unsigned old_size = EXT3_I(inode)->i_data[0];
- if (old_size != 0) {
- LASSERT(old_size < sizeof(EXT3_I(inode)->i_data));
- CERROR("setting EA on %lu/%u again... interesting\n",
- inode->i_ino, inode->i_generation);
- }
+ lock_kernel();
- EXT3_I(inode)->i_data[0] = cpu_to_le32(lmm_size);
- memcpy(&EXT3_I(inode)->i_data[1], lmm, lmm_size);
- mark_inode_dirty(inode);
- return 0;
- }
-#endif
-#ifdef OLD_EA
- /* keep this when we get rid of OLD_EA (too noisy during conversion) */
- if (EXT3_I(inode)->i_file_acl /* || large inode EA flag */) {
- CWARN("setting EA on %lu/%u again... interesting\n",
- inode->i_ino, inode->i_generation);
- old_ea = 1;
- }
+ rc = ext3_xattr_set_handle(handle, inode, EXT3_XATTR_INDEX_TRUSTED,
+ name, buffer, buffer_size, 0);
+ unlock_kernel();
+ if (rc)
+ CERROR("set xattr %s from inode %lu: rc %d\n",
+ name, inode->i_ino, rc);
+ return rc;
+}
+static int fsfilt_ext3_get_xattr(struct inode *inode, char *name,
+ void *buffer, int buffer_size)
+{
+ int rc = 0;
+
lock_kernel();
- /* this can go away before 1.0. For bug 2097 testing only. */
- rc = ext3_xattr_set_handle(handle, inode, EXT3_XATTR_INDEX_LUSTRE,
- XATTR_LUSTRE_MDS_OBJID, lmm, lmm_size, 0);
-#else
- lock_kernel();
- rc = ext3_xattr_set_handle(handle, inode, EXT3_XATTR_INDEX_TRUSTED,
- XATTR_LUSTRE_MDS_LOV_EA, lmm, lmm_size, 0);
-
- /* This tries to delete the old-format LOV EA, but only as long as we
- * have successfully saved the new-format LOV EA (we can always try
- * the conversion again the next time the file is accessed). It is
- * possible (although unlikely) that the new-format LOV EA couldn't be
- * saved because it ran out of space but we would need a file striped
- * over least 123 OSTs before the two EAs filled a 4kB block.
- *
- * This can be removed when all filesystems have converted to the
- * new EA format, but otherwise adds little if any overhead. If we
- * wanted backward compatibility for existing files, we could keep
- * the old EA around for a while but we'd have to clean it up later. */
- if (rc >= 0 && old_ea) {
- int err = ext3_xattr_set_handle(handle, inode,
- EXT3_XATTR_INDEX_LUSTRE,
- XATTR_LUSTRE_MDS_OBJID,
- NULL, 0, 0);
- if (err)
- CERROR("error deleting old LOV EA on %lu/%u: rc %d\n",
- inode->i_ino, inode->i_generation, err);
- }
-#endif
+
+ rc = ext3_xattr_get(inode, EXT3_XATTR_INDEX_TRUSTED,
+ name, buffer, buffer_size);
unlock_kernel();
- if (rc)
- CERROR("error adding MD data to inode %lu: rc = %d\n",
- inode->i_ino, rc);
+ if (buffer == NULL)
+ return (rc == -ENODATA) ? 0 : rc;
+ if (rc < 0) {
+ CDEBUG(D_INFO, "error getting EA %s from inode %lu: rc %d\n",
+ name, inode->i_ino, rc);
+ memset(buffer, 0, buffer_size);
+ return (rc == -ENODATA) ? 0 : rc;
+ }
+
return rc;
}
-/* Must be called with i_sem held */
-static int fsfilt_ext3_get_md(struct inode *inode, void *lmm, int lmm_size)
+static int fsfilt_ext3_set_md(struct inode *inode, void *handle,
+ void *lmm, int lmm_size,
+ enum ea_type type)
{
int rc;
+
+ switch(type) {
+ case EA_LOV:
+ rc = fsfilt_ext3_set_xattr(inode, handle,
+ XATTR_LUSTRE_MDS_LOV_EA,
+ lmm, lmm_size);
+ break;
+ case EA_MEA:
+ rc = fsfilt_ext3_set_xattr(inode, handle,
+ XATTR_LUSTRE_MDS_MEA_EA,
+ lmm, lmm_size);
+ break;
+ case EA_SID:
+ rc = fsfilt_ext3_set_xattr(inode, handle,
+ XATTR_LUSTRE_MDS_SID_EA,
+ lmm, lmm_size);
+ break;
+ case EA_MID:
+ rc = fsfilt_ext3_set_xattr(inode, handle,
+ XATTR_LUSTRE_MDS_MID_EA,
+ lmm, lmm_size);
+ break;
+ default:
+ return -EINVAL;
+ }
- LASSERT(down_trylock(&inode->i_sem) != 0);
- lock_kernel();
- /* Keep support for reading "inline EAs" until we convert
- * users over to new format entirely. See bug 841/2097. */
- if (inode->i_blocks == 0 && EXT3_I(inode)->i_data[0]) {
- unsigned size = le32_to_cpu(EXT3_I(inode)->i_data[0]);
- void *handle;
-
- LASSERT(size < sizeof(EXT3_I(inode)->i_data));
- if (lmm) {
- if (size > lmm_size) {
- CERROR("inline EA on %lu/%u bad size %u > %u\n",
- inode->i_ino, inode->i_generation,
- size, lmm_size);
- return -ERANGE;
- }
- memcpy(lmm, &EXT3_I(inode)->i_data[1], size);
- }
+ return rc;
+}
-#ifndef INLINE_EA
- /* migrate LOV EA data to external block - keep same format */
- CWARN("DEBUG: migrate inline EA for inode %lu/%u to block\n",
- inode->i_ino, inode->i_generation);
-
- handle = journal_start(EXT3_JOURNAL(inode),
- EXT3_XATTR_TRANS_BLOCKS);
- if (!IS_ERR(handle)) {
- int err;
- rc = fsfilt_ext3_set_md(inode, handle,
- &EXT3_I(inode)->i_data[1],size);
- if (rc == 0) {
- memset(EXT3_I(inode)->i_data, 0,
- sizeof(EXT3_I(inode)->i_data));
- mark_inode_dirty(inode);
- }
- err = journal_stop(handle);
- if (err && rc == 0)
- rc = err;
- } else {
- rc = PTR_ERR(handle);
- }
-#endif
- unlock_kernel();
- return size;
+static int fsfilt_ext3_get_md(struct inode *inode, void *lmm,
+ int lmm_size, enum ea_type type)
+{
+ int rc;
+
+ switch (type) {
+ case EA_LOV:
+ rc = fsfilt_ext3_get_xattr(inode,
+ XATTR_LUSTRE_MDS_LOV_EA,
+ lmm, lmm_size);
+ break;
+ case EA_MEA:
+ rc = fsfilt_ext3_get_xattr(inode,
+ XATTR_LUSTRE_MDS_MEA_EA,
+ lmm, lmm_size);
+ break;
+ case EA_SID:
+ rc = fsfilt_ext3_get_xattr(inode,
+ XATTR_LUSTRE_MDS_SID_EA,
+ lmm, lmm_size);
+ break;
+ case EA_MID:
+ rc = fsfilt_ext3_get_xattr(inode,
+ XATTR_LUSTRE_MDS_MID_EA,
+ lmm, lmm_size);
+ break;
+ default:
+ return -EINVAL;
}
+
+ return rc;
+}
- rc = ext3_xattr_get(inode, EXT3_XATTR_INDEX_TRUSTED,
- XATTR_LUSTRE_MDS_LOV_EA, lmm, lmm_size);
- /* try old EA type if new one failed - MDS will convert it for us */
- if (rc == -ENODATA) {
- CDEBUG(D_INFO,"failed new LOV EA %d/%s from inode %lu: rc %d\n",
- EXT3_XATTR_INDEX_TRUSTED, XATTR_LUSTRE_MDS_LOV_EA,
- inode->i_ino, rc);
-
- rc = ext3_xattr_get(inode, EXT3_XATTR_INDEX_LUSTRE,
- XATTR_LUSTRE_MDS_OBJID, lmm, lmm_size);
+static int fsfilt_ext3_send_bio(int rw, struct inode *inode, void *bio)
+{
+ int rc = 0;
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+ submit_bio(rw, (struct bio *)bio);
+#else
+ struct bio *b = (struct kiobuf *)bio;
+ int blocks_per_page;
+
+ rc = brw_kiovec(rw, 1, &b, inode->i_dev,
+ b->blocks, 1 << inode->i_blkbits);
+
+ blocks_per_page = PAGE_SIZE >> inode->i_blkbits;
+
+ if (rc != (1 << inode->i_blkbits) * b->nr_pages * blocks_per_page) {
+ CERROR("short write? expected %d, wrote %d\n",
+ (1 << inode->i_blkbits) * b->nr_pages *
+ blocks_per_page, rc);
}
- unlock_kernel();
+#endif
+ return rc;
+}
- /* This gives us the MD size */
- if (lmm == NULL)
- return (rc == -ENODATA) ? 0 : rc;
+static struct page *fsfilt_ext3_getpage(struct inode *inode, long int index)
+{
+ int rc;
+ struct page *page;
+
+ page = grab_cache_page(inode->i_mapping, index);
+ if (page == NULL)
+ return ERR_PTR(-ENOMEM);
+ if (PageUptodate(page)) {
+ unlock_page(page);
+ return page;
+ }
+
+ rc = inode->i_mapping->a_ops->readpage(NULL, page);
if (rc < 0) {
- CDEBUG(D_INFO, "error getting EA %d/%s from inode %lu: rc %d\n",
- EXT3_XATTR_INDEX_LUSTRE, XATTR_LUSTRE_MDS_OBJID,
- inode->i_ino, rc);
- memset(lmm, 0, lmm_size);
- return (rc == -ENODATA) ? 0 : rc;
+ page_cache_release(page);
+ return ERR_PTR(rc);
}
- return rc;
+ return page;
}
static ssize_t fsfilt_ext3_readpage(struct file *file, char *buf, size_t count,
{
struct fsfilt_cb_data *fcb = (struct fsfilt_cb_data *)jcb;
- fcb->cb_func(fcb->cb_obd, fcb->cb_last_rcvd, fcb->cb_data, error);
+ fcb->cb_func(fcb->cb_obd, fcb->cb_last_num, fcb->cb_data, error);
OBD_SLAB_FREE(fcb, fcb_cache, sizeof *fcb);
atomic_dec(&fcb_cache_count);
}
-static int fsfilt_ext3_add_journal_cb(struct obd_device *obd, __u64 last_rcvd,
- void *handle, fsfilt_cb_t cb_func,
+static int fsfilt_ext3_add_journal_cb(struct obd_device *obd,
+ struct super_block *sb,
+ __u64 last_num, void *handle,
+ fsfilt_cb_t cb_func,
void *cb_data)
{
struct fsfilt_cb_data *fcb;
atomic_inc(&fcb_cache_count);
fcb->cb_func = cb_func;
fcb->cb_obd = obd;
- fcb->cb_last_rcvd = last_rcvd;
+ fcb->cb_last_num = last_num;
fcb->cb_data = cb_data;
- CDEBUG(D_EXT2, "set callback for last_rcvd: "LPD64"\n", last_rcvd);
+ CDEBUG(D_EXT2, "set callback for last_num: "LPD64"\n", last_num);
lock_kernel();
journal_callback_set(handle, fsfilt_ext3_cb_func,
(struct journal_callback *)fcb);
unlock_kernel();
-
return 0;
}
static int fsfilt_ext3_statfs(struct super_block *sb, struct obd_statfs *osfs)
{
struct kstatfs sfs;
- int rc = vfs_statfs(sb, &sfs);
+ int rc;
+
+ memset(&sfs, 0, sizeof(sfs));
+
+ rc = sb->s_op->statfs(sb, &sfs);
if (!rc && sfs.f_bfree < sfs.f_ffree) {
sfs.f_files = (sfs.f_files - sfs.f_ffree) + sfs.f_bfree;
return ext3_force_commit(sb);
}
+#ifdef EXT3_MULTIBLOCK_ALLOCATOR
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
+#define ext3_up_truncate_sem(inode) up_write(&EXT3_I(inode)->truncate_sem);
+#define ext3_down_truncate_sem(inode) down_write(&EXT3_I(inode)->truncate_sem);
+#else
+#define ext3_up_truncate_sem(inode) up(&EXT3_I(inode)->truncate_sem);
+#define ext3_down_truncate_sem(inode) down(&EXT3_I(inode)->truncate_sem);
+#endif
+
+#include <linux/lustre_version.h>
+#if EXT3_EXT_MAGIC == 0xf301
+#define ee_start e_start
+#define ee_block e_block
+#define ee_len e_num
+#endif
+#ifndef EXT3_BB_MAX_BLOCKS
+#define ext3_mb_new_blocks(handle, inode, goal, count, aflags, err) \
+ ext3_new_blocks(handle, inode, count, goal, err)
+#endif
+
+struct bpointers {
+ unsigned long *blocks;
+ int *created;
+ unsigned long start;
+ int num;
+ int init_num;
+ int create;
+};
+static int ext3_ext_find_goal(struct inode *inode, struct ext3_ext_path *path,
+ unsigned long block, int *aflags)
+{
+ struct ext3_inode_info *ei = EXT3_I(inode);
+ unsigned long bg_start;
+ unsigned long colour;
+ int depth;
+
+ if (path) {
+ struct ext3_extent *ex;
+ depth = path->p_depth;
+
+ /* try to predict block placement */
+ if ((ex = path[depth].p_ext)) {
+ if (ex->ee_block + ex->ee_len == block)
+ *aflags |= 1;
+ return ex->ee_start + (block - ex->ee_block);
+ }
+
+ /* it looks index is empty
+ * try to find starting from index itself */
+ if (path[depth].p_bh)
+ return path[depth].p_bh->b_blocknr;
+ }
+
+ /* OK. use inode's group */
+ bg_start = (ei->i_block_group * EXT3_BLOCKS_PER_GROUP(inode->i_sb)) +
+ le32_to_cpu(EXT3_SB(inode->i_sb)->s_es->s_first_data_block);
+ colour = (current->pid % 16) *
+ (EXT3_BLOCKS_PER_GROUP(inode->i_sb) / 16);
+ return bg_start + colour + block;
+}
+
+static int ext3_ext_new_extent_cb(struct ext3_extents_tree *tree,
+ struct ext3_ext_path *path,
+ struct ext3_extent *newex, int exist)
+{
+ struct inode *inode = tree->inode;
+ struct bpointers *bp = tree->private;
+ int count, err, goal;
+ unsigned long pblock;
+ unsigned long tgen;
+ loff_t new_i_size;
+ handle_t *handle;
+ int i, aflags = 0;
+
+ i = EXT_DEPTH(tree);
+ EXT_ASSERT(i == path->p_depth);
+ EXT_ASSERT(path[i].p_hdr);
+
+ if (exist) {
+ err = EXT_CONTINUE;
+ goto map;
+ }
+
+ if (bp->create == 0) {
+ i = 0;
+ if (newex->ee_block < bp->start)
+ i = bp->start - newex->ee_block;
+ if (i >= newex->ee_len)
+ CERROR("nothing to do?! i = %d, e_num = %u\n",
+ i, newex->ee_len);
+ for (; i < newex->ee_len && bp->num; i++) {
+ *(bp->created) = 0;
+ bp->created++;
+ *(bp->blocks) = 0;
+ bp->blocks++;
+ bp->num--;
+ bp->start++;
+ }
+
+ return EXT_CONTINUE;
+ }
+ tgen = EXT_GENERATION(tree);
+ count = ext3_ext_calc_credits_for_insert(tree, path);
+ ext3_up_truncate_sem(inode);
+ lock_kernel();
+ handle = journal_start(EXT3_JOURNAL(inode), count + EXT3_ALLOC_NEEDED + 1);
+ unlock_kernel();
+ if (IS_ERR(handle)) {
+ ext3_down_truncate_sem(inode);
+ return PTR_ERR(handle);
+ }
+
+ if (tgen != EXT_GENERATION(tree)) {
+ /* the tree has changed. so path can be invalid at moment */
+ lock_kernel();
+ journal_stop(handle);
+ unlock_kernel();
+ ext3_down_truncate_sem(inode);
+ return EXT_REPEAT;
+ }
+ ext3_down_truncate_sem(inode);
+ count = newex->ee_len;
+ goal = ext3_ext_find_goal(inode, path, newex->ee_block, &aflags);
+ aflags |= 2; /* block have been already reserved */
+ pblock = ext3_mb_new_blocks(handle, inode, goal, &count, aflags, &err);
+ if (!pblock)
+ goto out;
+ EXT_ASSERT(count <= newex->ee_len);
+
+ /* insert new extent */
+ newex->ee_start = pblock;
+ newex->ee_len = count;
+ err = ext3_ext_insert_extent(handle, tree, path, newex);
+ if (err)
+ goto out;
+
+ /* correct on-disk inode size */
+ if (newex->ee_len > 0) {
+ new_i_size = (loff_t) newex->ee_block + newex->ee_len;
+ new_i_size = new_i_size << inode->i_blkbits;
+ if (new_i_size > EXT3_I(inode)->i_disksize) {
+ EXT3_I(inode)->i_disksize = new_i_size;
+ err = ext3_mark_inode_dirty(handle, inode);
+ }
+ }
+out:
+ lock_24kernel();
+ journal_stop(handle);
+ unlock_24kernel();
+map:
+ if (err >= 0) {
+ /* map blocks */
+ if (bp->num == 0) {
+ CERROR("hmm. why do we find this extent?\n");
+ CERROR("initial space: %lu:%u\n",
+ bp->start, bp->init_num);
+ CERROR("current extent: %u/%u/%u %d\n",
+ newex->ee_block, newex->ee_len,
+ newex->ee_start, exist);
+ }
+ i = 0;
+ if (newex->ee_block < bp->start)
+ i = bp->start - newex->ee_block;
+ if (i >= newex->ee_len)
+ CERROR("nothing to do?! i = %d, e_num = %u\n",
+ i, newex->ee_len);
+ for (; i < newex->ee_len && bp->num; i++) {
+ *(bp->created) = (exist == 0 ? 1 : 0);
+ bp->created++;
+ *(bp->blocks) = newex->ee_start + i;
+ bp->blocks++;
+ bp->num--;
+ bp->start++;
+ }
+ }
+ return err;
+}
+
+int fsfilt_map_nblocks(struct inode *inode, unsigned long block,
+ unsigned long num, unsigned long *blocks,
+ int *created, int create)
+{
+ struct ext3_extents_tree tree;
+ struct bpointers bp;
+ int err;
+
+ CDEBUG(D_OTHER, "blocks %lu-%lu requested for inode %u\n",
+ block, block + num, (unsigned) inode->i_ino);
+
+ ext3_init_tree_desc(&tree, inode);
+ tree.private = &bp;
+ bp.blocks = blocks;
+ bp.created = created;
+ bp.start = block;
+ bp.init_num = bp.num = num;
+ bp.create = create;
+
+ ext3_down_truncate_sem(inode);
+ err = ext3_ext_walk_space(&tree, block, num, ext3_ext_new_extent_cb);
+ ext3_ext_invalidate_cache(&tree);
+ ext3_up_truncate_sem(inode);
+ return err;
+}
+
+int fsfilt_ext3_map_ext_inode_pages(struct inode *inode, struct page **page,
+ int pages, unsigned long *blocks,
+ int *created, int create)
+{
+ int blocks_per_page = PAGE_SIZE >> inode->i_blkbits;
+ int rc = 0, i = 0;
+ struct page *fp = NULL;
+ int clen = 0;
+
+ CDEBUG(D_OTHER, "inode %lu: map %d pages from %lu\n",
+ inode->i_ino, pages, (*page)->index);
+
+ /* pages are sorted already. so, we just have to find
+ * contig. space and process them properly */
+ while (i < pages) {
+ if (fp == NULL) {
+ /* start new extent */
+ fp = *page++;
+ clen = 1;
+ i++;
+ continue;
+ } else if (fp->index + clen == (*page)->index) {
+ /* continue the extent */
+ page++;
+ clen++;
+ i++;
+ continue;
+ }
+
+ /* process found extent */
+ rc = fsfilt_map_nblocks(inode, fp->index * blocks_per_page,
+ clen * blocks_per_page, blocks,
+ created, create);
+ if (rc)
+ GOTO(cleanup, rc);
+
+ /* look for next extent */
+ fp = NULL;
+ blocks += blocks_per_page * clen;
+ created += blocks_per_page * clen;
+ }
+
+ if (fp)
+ rc = fsfilt_map_nblocks(inode, fp->index * blocks_per_page,
+ clen * blocks_per_page, blocks,
+ created, create);
+cleanup:
+ return rc;
+}
+#endif
+
extern int ext3_map_inode_page(struct inode *inode, struct page *page,
unsigned long *blocks, int *created, int create);
-int fsfilt_ext3_map_inode_page(struct inode *inode, struct page *page,
- unsigned long *blocks, int *created, int create)
+int fsfilt_ext3_map_bm_inode_pages(struct inode *inode, struct page **page,
+ int pages, unsigned long *blocks,
+ int *created, int create)
{
- return ext3_map_inode_page(inode, page, blocks, created, create);
+ int blocks_per_page = PAGE_SIZE >> inode->i_blkbits;
+ unsigned long *b;
+ int rc = 0, i, *cr;
+
+ for (i = 0, cr = created, b = blocks; i < pages; i++, page++) {
+ rc = ext3_map_inode_page(inode, *page, b, cr, create);
+ if (rc) {
+ CERROR("ino %lu, blk %lu cr %u create %d: rc %d\n",
+ inode->i_ino, *b, *cr, create, rc);
+ break;
+ }
+
+ b += blocks_per_page;
+ cr += blocks_per_page;
+ }
+ return rc;
+}
+
+int fsfilt_ext3_map_inode_pages(struct inode *inode, struct page **page,
+ int pages, unsigned long *blocks,
+ int *created, int create,
+ struct semaphore *optional_sem)
+{
+ int rc;
+#ifdef EXT3_MULTIBLOCK_ALLOCATOR
+ if (EXT3_I(inode)->i_flags & EXT3_EXTENTS_FL) {
+ rc = fsfilt_ext3_map_ext_inode_pages(inode, page, pages,
+ blocks, created, create);
+ return rc;
+ }
+#endif
+ if (optional_sem != NULL)
+ down(optional_sem);
+ rc = fsfilt_ext3_map_bm_inode_pages(inode, page, pages, blocks,
+ created, create);
+ if (optional_sem != NULL)
+ up(optional_sem);
+
+ return rc;
}
extern int ext3_prep_san_write(struct inode *inode, long *blocks,
loff_t new_size = inode->i_size;
journal_t *journal;
handle_t *handle;
- int err, block_count = 0, blocksize, size, boffs;
+ int err = 0, block_count = 0, blocksize, size, boffs;
/* Determine how many transaction credits are needed */
blocksize = 1 << inode->i_blkbits;
block_count = (block_count + blocksize - 1) >> inode->i_blkbits;
journal = EXT3_SB(inode->i_sb)->s_journal;
- lock_kernel();
+ lock_24kernel();
handle = journal_start(journal,
block_count * EXT3_DATA_TRANS_BLOCKS + 2);
- unlock_kernel();
+ unlock_24kernel();
if (IS_ERR(handle)) {
CERROR("can't start transaction\n");
return PTR_ERR(handle);
unlock_kernel();
}
- lock_kernel();
+ lock_24kernel();
journal_stop(handle);
- unlock_kernel();
+ unlock_24kernel();
if (err == 0)
*offs = offset;
return err;
}
-static int fsfilt_ext3_setup(struct super_block *sb)
+static int fsfilt_ext3_setup(struct obd_device *obd, struct super_block *sb)
{
+#ifdef EXT3_FEATURE_INCOMPAT_MDSNUM
+ struct mds_obd *mds = &obd->u.mds;
+#endif
#if 0
EXT3_SB(sb)->dx_lock = fsfilt_ext3_dx_lock;
EXT3_SB(sb)->dx_unlock = fsfilt_ext3_dx_unlock;
set_opt(EXT3_SB(sb)->s_mount_opt, PDIROPS);
sb->s_flags |= S_PDIROPS;
#endif
+ /* setup mdsnum in underlying fs */
+#ifdef EXT3_FEATURE_INCOMPAT_MDSNUM
+ if (mds->mds_md_obd) {
+ struct ext3_sb_info *sbi = EXT3_SB(sb);
+ struct ext3_super_block *es = sbi->s_es;
+ handle_t *handle;
+ int err;
+
+ if (!EXT3_HAS_INCOMPAT_FEATURE(sb, EXT3_FEATURE_INCOMPAT_MDSNUM)) {
+ CWARN("%s: set mdsnum %d in ext3\n",
+ obd->obd_name, mds->mds_num);
+ lock_kernel();
+ handle = journal_start(sbi->s_journal, 1);
+ unlock_kernel();
+ LASSERT(!IS_ERR(handle));
+ err = ext3_journal_get_write_access(handle, sbi->s_sbh);
+ LASSERT(err == 0);
+ EXT3_SET_INCOMPAT_FEATURE(sb,
+ EXT3_FEATURE_INCOMPAT_MDSNUM);
+ es->s_mdsnum = mds->mds_num;
+ err = ext3_journal_dirty_metadata(handle, sbi->s_sbh);
+ LASSERT(err == 0);
+ lock_kernel();
+ journal_stop(handle);
+ unlock_kernel();
+ } else {
+ CWARN("%s: mdsnum initialized to %u in ext3fs\n",
+ obd->obd_name, es->s_mdsnum);
+ }
+ sbi->s_mdsnum = es->s_mdsnum;
+ }
+#endif
return 0;
}
+extern int ext3_add_dir_entry(struct dentry *dentry);
+extern int ext3_del_dir_entry(struct dentry *dentry);
+
+static int fsfilt_ext3_add_dir_entry(struct obd_device *obd,
+ struct dentry *parent,
+ char *name, int namelen,
+ unsigned long ino,
+ unsigned long generation,
+ unsigned long mds,
+ unsigned long fid)
+{
+#ifdef EXT3_FEATURE_INCOMPAT_MDSNUM
+ struct dentry *dentry;
+ int err;
+ LASSERT(ino != 0);
+ LASSERT(namelen != 0);
+ dentry = ll_lookup_one_len(name, parent, namelen);
+ if (IS_ERR(dentry)) {
+ CERROR("can't lookup %*s in %lu/%lu: %d\n", dentry->d_name.len,
+ dentry->d_name.name, dentry->d_inode->i_ino,
+ (unsigned long) dentry->d_inode->i_generation,
+ (int) PTR_ERR(dentry));
+ RETURN(PTR_ERR(dentry));
+ }
+ if (dentry->d_inode != NULL || dentry->d_flags & DCACHE_CROSS_REF) {
+ CERROR("dentry %*s(0x%p) found\n", dentry->d_name.len,
+ dentry->d_name.name, dentry);
+ l_dput(dentry);
+ RETURN(-EEXIST);
+ }
+
+ /* mds_reint_rename() may use this method to add dir entry
+ * that points onto local inode. and we don't want to find
+ * it cross-ref by subsequent lookups */
+ d_drop(dentry);
+
+ dentry->d_flags |= DCACHE_CROSS_REF;
+ dentry->d_inum = ino;
+ dentry->d_mdsnum = mds;
+ dentry->d_generation = generation;
+ dentry->d_fid = fid;
+ lock_kernel();
+ err = ext3_add_dir_entry(dentry);
+ unlock_kernel();
+
+ l_dput(dentry);
+
+ RETURN(err);
+#else
+#error "rebuild kernel and lustre with ext3-mds-num patch!"
+ LASSERT(0);
+#endif
+}
+
+static int fsfilt_ext3_del_dir_entry(struct obd_device *obd,
+ struct dentry *dentry)
+{
+#ifdef EXT3_FEATURE_INCOMPAT_MDSNUM
+ int err;
+ lock_kernel();
+ err = ext3_del_dir_entry(dentry);
+ unlock_kernel();
+ if (err == 0)
+ d_drop(dentry);
+ return err;
+#else
+#error "rebuild kernel and lustre with ext3-mds-num patch!"
+ LASSERT(0);
+#endif
+}
+
+/* If fso is NULL, op is FSFILT operation, otherwise op is number of fso
+ objects. Logs is number of logfiles to update */
+static int fsfilt_ext3_get_op_len(int op, struct fsfilt_objinfo *fso, int logs)
+{
+ if ( !fso ) {
+ switch(op) {
+ case FSFILT_OP_CREATE:
+ /* directory leaf, index & indirect & EA*/
+ return 4 + 3 * logs;
+ case FSFILT_OP_UNLINK:
+ return 3 * logs;
+ }
+ } else {
+ int i;
+ int needed = 0;
+ struct super_block *sb = fso->fso_dentry->d_inode->i_sb;
+ int blockpp = 1 << (PAGE_CACHE_SHIFT - sb->s_blocksize_bits);
+ int addrpp = EXT3_ADDR_PER_BLOCK(sb) * blockpp;
+ for (i = 0; i < op; i++, fso++) {
+ int nblocks = fso->fso_bufcnt * blockpp;
+ int ndindirect = min(nblocks, addrpp + 1);
+ int nindir = nblocks + ndindirect + 1;
+
+ needed += nindir;
+ }
+ return needed + 3 * logs;
+ }
+
+ return 0;
+}
+
+
+#define EXTENTS_EA "write_extents"
+#define EXTENTS_EA_SIZE 64
+
+int ext3_ext_in_ea_alloc_space(struct inode *, int, const char *, unsigned long, unsigned long);
+int ext3_ext_in_ea_remove_space(struct inode *, int, const char *, unsigned long, unsigned long);
+int ext3_ext_in_ea_get_extents(struct inode *, int, const char *, char **, int *);
+int ext3_ext_in_ea_get_extents_num(struct inode *, int, const char *, int *);
+
+static int fsfilt_ext3_insert_extents_ea(struct inode *inode,
+ unsigned long from,
+ unsigned long num)
+{
+ int rc = 0;
+
+ rc = ext3_ext_in_ea_alloc_space(inode, EXT3_XATTR_INDEX_TRUSTED,
+ EXTENTS_EA, from, num);
+ return rc;
+}
+
+static int fsfilt_ext3_remove_extents_ea(struct inode *inode,
+ unsigned long from,
+ unsigned long num)
+{
+ int rc = 0;
+
+ rc = ext3_ext_in_ea_remove_space(inode, EXT3_XATTR_INDEX_TRUSTED,
+ EXTENTS_EA, from, num);
+ return rc;
+}
+
+extern int ext3_init_tree_in_ea(struct inode *inode, int name_index,
+ const char *eaname, int size);
+
+static int fsfilt_ext3_init_extents_ea(struct inode *inode)
+{
+ int rc = 0;
+
+ rc = ext3_init_tree_in_ea(inode, EXT3_XATTR_INDEX_TRUSTED,
+ EXTENTS_EA, 64);
+ return rc;
+}
+
+static int fsfilt_ext3_get_inode_write_extents(struct inode *inode,
+ char **pbuf, int *size)
+{
+ int rc = 0;
+
+ rc = ext3_ext_in_ea_get_extents(inode, EXT3_XATTR_INDEX_TRUSTED,
+ EXTENTS_EA, pbuf, size);
+ return rc;
+}
+
+static int fsfilt_ext3_get_write_extents_num(struct inode *inode, int *size)
+{
+ int rc = 0;
+
+ rc = ext3_ext_in_ea_get_extents_num(inode, EXT3_XATTR_INDEX_TRUSTED,
+ EXTENTS_EA, size);
+ return rc;
+}
+
static struct fsfilt_operations fsfilt_ext3_ops = {
- fs_type: "ext3",
- fs_owner: THIS_MODULE,
- fs_start: fsfilt_ext3_start,
- fs_brw_start: fsfilt_ext3_brw_start,
- fs_commit: fsfilt_ext3_commit,
- fs_commit_async: fsfilt_ext3_commit_async,
- fs_commit_wait: fsfilt_ext3_commit_wait,
- fs_setattr: fsfilt_ext3_setattr,
- fs_iocontrol: fsfilt_ext3_iocontrol,
- fs_set_md: fsfilt_ext3_set_md,
- fs_get_md: fsfilt_ext3_get_md,
- fs_readpage: fsfilt_ext3_readpage,
- fs_add_journal_cb: fsfilt_ext3_add_journal_cb,
- fs_statfs: fsfilt_ext3_statfs,
- fs_sync: fsfilt_ext3_sync,
- fs_map_inode_page: fsfilt_ext3_map_inode_page,
- fs_prep_san_write: fsfilt_ext3_prep_san_write,
- fs_write_record: fsfilt_ext3_write_record,
- fs_read_record: fsfilt_ext3_read_record,
- fs_setup: fsfilt_ext3_setup,
+ .fs_type = "ext3",
+ .fs_owner = THIS_MODULE,
+ .fs_start = fsfilt_ext3_start,
+ .fs_brw_start = fsfilt_ext3_brw_start,
+ .fs_commit = fsfilt_ext3_commit,
+ .fs_commit_async = fsfilt_ext3_commit_async,
+ .fs_commit_wait = fsfilt_ext3_commit_wait,
+ .fs_setattr = fsfilt_ext3_setattr,
+ .fs_iocontrol = fsfilt_ext3_iocontrol,
+ .fs_set_md = fsfilt_ext3_set_md,
+ .fs_get_md = fsfilt_ext3_get_md,
+ .fs_readpage = fsfilt_ext3_readpage,
+ .fs_add_journal_cb = fsfilt_ext3_add_journal_cb,
+ .fs_statfs = fsfilt_ext3_statfs,
+ .fs_sync = fsfilt_ext3_sync,
+ .fs_map_inode_pages = fsfilt_ext3_map_inode_pages,
+ .fs_prep_san_write = fsfilt_ext3_prep_san_write,
+ .fs_write_record = fsfilt_ext3_write_record,
+ .fs_read_record = fsfilt_ext3_read_record,
+ .fs_setup = fsfilt_ext3_setup,
+ .fs_getpage = fsfilt_ext3_getpage,
+ .fs_send_bio = fsfilt_ext3_send_bio,
+ .fs_set_xattr = fsfilt_ext3_set_xattr,
+ .fs_get_xattr = fsfilt_ext3_get_xattr,
+ .fs_get_op_len = fsfilt_ext3_get_op_len,
+ .fs_add_dir_entry = fsfilt_ext3_add_dir_entry,
+ .fs_del_dir_entry = fsfilt_ext3_del_dir_entry,
+ .fs_init_extents_ea = fsfilt_ext3_init_extents_ea,
+ .fs_insert_extents_ea = fsfilt_ext3_insert_extents_ea,
+ .fs_remove_extents_ea = fsfilt_ext3_remove_extents_ea,
+ .fs_get_inode_write_extents = fsfilt_ext3_get_inode_write_extents,
+ .fs_get_write_extents_num = fsfilt_ext3_get_write_extents_num,
};
static int __init fsfilt_ext3_init(void)
{
int rc;
- //rc = ext3_xattr_register();
fcb_cache = kmem_cache_create("fsfilt_ext3_fcb",
sizeof(struct fsfilt_cb_data), 0,
0, NULL, NULL);
static void __exit fsfilt_ext3_exit(void)
{
- int rc;
-
fsfilt_unregister_ops(&fsfilt_ext3_ops);
- rc = kmem_cache_destroy(fcb_cache);
-
- if (rc || atomic_read(&fcb_cache_count)) {
- CERROR("can't free fsfilt callback cache: count %d, rc = %d\n",
- atomic_read(&fcb_cache_count), rc);
- }
-
- //rc = ext3_xattr_unregister();
+ LASSERTF(kmem_cache_destroy(fcb_cache) == 0,
+ "can't free fsfilt callback cache: count %d\n",
+ atomic_read(&fcb_cache_count));
}
module_init(fsfilt_ext3_init);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff