if (attr->ia_valid & ATTR_SIZE) {
bool to_smaller = (attr->ia_size <= i_size_read(inode));
- down_write(&F2FS_I(inode)->i_mmap_sem);
down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
+ down_write(&F2FS_I(inode)->i_mmap_sem);
truncate_setsize(inode, attr->ia_size);
* do not trim all blocks after i_size if target size is
* larger than i_size.
*/
- up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
up_write(&F2FS_I(inode)->i_mmap_sem);
+ up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
if (err)
return err;
blk_start = (loff_t)pg_start << PAGE_SHIFT;
blk_end = (loff_t)pg_end << PAGE_SHIFT;
- down_write(&F2FS_I(inode)->i_mmap_sem);
down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
+ down_write(&F2FS_I(inode)->i_mmap_sem);
truncate_inode_pages_range(mapping, blk_start,
blk_end - 1);
ret = f2fs_truncate_hole(inode, pg_start, pg_end);
f2fs_unlock_op(sbi);
- up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
up_write(&F2FS_I(inode)->i_mmap_sem);
+ up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
}
}
return ret;
}
-static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end)
+static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
+ pgoff_t start = offset >> PAGE_SHIFT;
+ pgoff_t end = (offset + len) >> PAGE_SHIFT;
int ret;
f2fs_balance_fs(sbi, true);
- f2fs_lock_op(sbi);
- f2fs_drop_extent_tree(inode);
+ /* avoid gc operation during block exchange */
+ down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
+ down_write(&F2FS_I(inode)->i_mmap_sem);
+ f2fs_lock_op(sbi);
+ f2fs_drop_extent_tree(inode);
+ truncate_pagecache(inode, offset);
ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true);
f2fs_unlock_op(sbi);
+
+ up_write(&F2FS_I(inode)->i_mmap_sem);
+ up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
return ret;
}
static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
{
- pgoff_t pg_start, pg_end;
loff_t new_size;
int ret;
if (ret)
return ret;
- pg_start = offset >> PAGE_SHIFT;
- pg_end = (offset + len) >> PAGE_SHIFT;
-
- /* avoid gc operation during block exchange */
- down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
-
- down_write(&F2FS_I(inode)->i_mmap_sem);
/* write out all dirty pages from offset */
ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
if (ret)
- goto out_unlock;
-
- truncate_pagecache(inode, offset);
+ return ret;
- ret = f2fs_do_collapse(inode, pg_start, pg_end);
+ ret = f2fs_do_collapse(inode, offset, len);
if (ret)
- goto out_unlock;
+ return ret;
/* write out all moved pages, if possible */
+ down_write(&F2FS_I(inode)->i_mmap_sem);
filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
truncate_pagecache(inode, offset);
truncate_pagecache(inode, new_size);
ret = f2fs_truncate_blocks(inode, new_size, true);
+ up_write(&F2FS_I(inode)->i_mmap_sem);
if (!ret)
f2fs_i_size_write(inode, new_size);
-out_unlock:
- up_write(&F2FS_I(inode)->i_mmap_sem);
- up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
return ret;
}
if (ret)
return ret;
- down_write(&F2FS_I(inode)->i_mmap_sem);
ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1);
if (ret)
- goto out_sem;
+ return ret;
pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
ret = fill_zero(inode, pg_start, off_start,
off_end - off_start);
if (ret)
- goto out_sem;
+ return ret;
new_size = max_t(loff_t, new_size, offset + len);
} else {
ret = fill_zero(inode, pg_start++, off_start,
PAGE_SIZE - off_start);
if (ret)
- goto out_sem;
+ return ret;
new_size = max_t(loff_t, new_size,
(loff_t)pg_start << PAGE_SHIFT);
pgoff_t end;
down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
+ down_write(&F2FS_I(inode)->i_mmap_sem);
truncate_pagecache_range(inode,
(loff_t)index << PAGE_SHIFT,
ret = f2fs_get_dnode_of_data(&dn, index, ALLOC_NODE);
if (ret) {
f2fs_unlock_op(sbi);
+ up_write(&F2FS_I(inode)->i_mmap_sem);
up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
goto out;
}
f2fs_put_dnode(&dn);
f2fs_unlock_op(sbi);
+ up_write(&F2FS_I(inode)->i_mmap_sem);
up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
f2fs_balance_fs(sbi, dn.node_changed);
else
f2fs_i_size_write(inode, new_size);
}
-out_sem:
- up_write(&F2FS_I(inode)->i_mmap_sem);
-
return ret;
}
f2fs_balance_fs(sbi, true);
- /* avoid gc operation during block exchange */
- down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
-
down_write(&F2FS_I(inode)->i_mmap_sem);
ret = f2fs_truncate_blocks(inode, i_size_read(inode), true);
+ up_write(&F2FS_I(inode)->i_mmap_sem);
if (ret)
- goto out;
+ return ret;
/* write out all dirty pages from offset */
ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
if (ret)
- goto out;
-
- truncate_pagecache(inode, offset);
+ return ret;
pg_start = offset >> PAGE_SHIFT;
pg_end = (offset + len) >> PAGE_SHIFT;
delta = pg_end - pg_start;
idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
+ /* avoid gc operation during block exchange */
+ down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
+ down_write(&F2FS_I(inode)->i_mmap_sem);
+ truncate_pagecache(inode, offset);
+
while (!ret && idx > pg_start) {
nr = idx - pg_start;
if (nr > delta)
idx + delta, nr, false);
f2fs_unlock_op(sbi);
}
+ up_write(&F2FS_I(inode)->i_mmap_sem);
+ up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
/* write out all moved pages, if possible */
+ down_write(&F2FS_I(inode)->i_mmap_sem);
filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
truncate_pagecache(inode, offset);
+ up_write(&F2FS_I(inode)->i_mmap_sem);
if (!ret)
f2fs_i_size_write(inode, new_size);
-out:
- up_write(&F2FS_I(inode)->i_mmap_sem);
- up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
return ret;
}
inode_lock(inode);
- down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
-
if (f2fs_is_atomic_file(inode)) {
if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST))
ret = -EINVAL;
if (ret)
goto out;
+ down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
+
if (!get_dirty_pages(inode))
goto skip_flush;
"Unexpected flush for atomic writes: ino=%lu, npages=%u",
inode->i_ino, get_dirty_pages(inode));
ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
- if (ret)
+ if (ret) {
+ up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
goto out;
+ }
skip_flush:
set_inode_flag(inode, FI_ATOMIC_FILE);
clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
- f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
+ up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
+ f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
F2FS_I(inode)->inmem_task = current;
stat_inc_atomic_write(inode);
stat_update_max_atomic_write(inode);
out:
- up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
inode_unlock(inode);
mnt_drop_write_file(filp);
return ret;
if (ret)
return ret;
- inode_lock(inode);
+ f2fs_balance_fs(F2FS_I_SB(inode), true);
- down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
+ inode_lock(inode);
if (f2fs_is_volatile_file(inode)) {
ret = -EINVAL;
clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
ret = -EINVAL;
}
- up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
inode_unlock(inode);
mnt_drop_write_file(filp);
return ret;
}
inode_lock(src);
- down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
if (src != dst) {
ret = -EBUSY;
if (!inode_trylock(dst))
goto out;
- if (!down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE])) {
- inode_unlock(dst);
- goto out;
- }
}
ret = -EINVAL;
goto out_unlock;
f2fs_balance_fs(sbi, true);
+
+ down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
+ if (src != dst) {
+ ret = -EBUSY;
+ if (!down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE]))
+ goto out_src;
+ }
+
f2fs_lock_op(sbi);
ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS,
pos_out >> F2FS_BLKSIZE_BITS,
f2fs_i_size_write(dst, dst_osize);
}
f2fs_unlock_op(sbi);
-out_unlock:
- if (src != dst) {
+
+ if (src != dst)
up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]);
+out_src:
+ up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
+out_unlock:
+ if (src != dst)
inode_unlock(dst);
- }
out:
- up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
inode_unlock(src);
return ret;
}
if (!down_write_trylock(
&F2FS_I(inode)->i_gc_rwsem[WRITE])) {
iput(inode);
+ sbi->skipped_gc_rwsem++;
continue;
}
continue;
if (!down_write_trylock(
&fi->i_gc_rwsem[WRITE])) {
+ sbi->skipped_gc_rwsem++;
up_write(&fi->i_gc_rwsem[READ]);
continue;
}
.iroot = RADIX_TREE_INIT(gc_list.iroot, GFP_NOFS),
};
unsigned long long last_skipped = sbi->skipped_atomic_files[FG_GC];
+ unsigned long long first_skipped;
unsigned int skipped_round = 0, round = 0;
trace_f2fs_gc_begin(sbi->sb, sync, background,
prefree_segments(sbi));
cpc.reason = __get_cp_reason(sbi);
+ sbi->skipped_gc_rwsem = 0;
+ first_skipped = last_skipped;
gc_more:
if (unlikely(!(sbi->sb->s_flags & SB_ACTIVE))) {
ret = -EINVAL;
total_freed += seg_freed;
if (gc_type == FG_GC) {
- if (sbi->skipped_atomic_files[FG_GC] > last_skipped)
+ if (sbi->skipped_atomic_files[FG_GC] > last_skipped ||
+ sbi->skipped_gc_rwsem)
skipped_round++;
last_skipped = sbi->skipped_atomic_files[FG_GC];
round++;
if (gc_type == FG_GC)
sbi->cur_victim_sec = NULL_SEGNO;
- if (!sync) {
- if (has_not_enough_free_secs(sbi, sec_freed, 0)) {
- if (skipped_round > MAX_SKIP_ATOMIC_COUNT &&
- skipped_round * 2 >= round)
- f2fs_drop_inmem_pages_all(sbi, true);
+ if (sync)
+ goto stop;
+
+ if (has_not_enough_free_secs(sbi, sec_freed, 0)) {
+ if (skipped_round <= MAX_SKIP_GC_COUNT ||
+ skipped_round * 2 < round) {
segno = NULL_SEGNO;
goto gc_more;
}
+ if (first_skipped < last_skipped &&
+ (last_skipped - first_skipped) >
+ sbi->skipped_gc_rwsem) {
+ f2fs_drop_inmem_pages_all(sbi, true);
+ segno = NULL_SEGNO;
+ goto gc_more;
+ }
if (gc_type == FG_GC)
ret = f2fs_write_checkpoint(sbi, &cpc);
}