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-rw-r--r--fs/ext4/balloc.c8
-rw-r--r--fs/ext4/inode.c14
-rw-r--r--fs/ext4/mballoc.c7
3 files changed, 24 insertions, 5 deletions
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index 1707850301d..57909882c08 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -1738,10 +1738,16 @@ ext4_fsblk_t ext4_old_new_blocks(handle_t *handle, struct inode *inode,
/*
* With delalloc we already reserved the blocks
*/
- if (ext4_claim_free_blocks(sbi, *count)) {
+ while (*count && ext4_claim_free_blocks(sbi, *count)) {
+ /* let others to free the space */
+ yield();
+ *count = *count >> 1;
+ }
+ if (!*count) {
*errp = -ENOSPC;
return 0; /*return with ENOSPC error */
}
+ num = *count;
}
/*
* Check quota for allocation of this block.
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index b778d5a33ea..eb9d449817d 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -1521,6 +1521,7 @@ static int ext4_journalled_write_end(struct file *file,
static int ext4_da_reserve_space(struct inode *inode, int nrblocks)
{
+ int retries = 0;
struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
unsigned long md_needed, mdblocks, total = 0;
@@ -1529,6 +1530,7 @@ static int ext4_da_reserve_space(struct inode *inode, int nrblocks)
* in order to allocate nrblocks
* worse case is one extent per block
*/
+repeat:
spin_lock(&EXT4_I(inode)->i_block_reservation_lock);
total = EXT4_I(inode)->i_reserved_data_blocks + nrblocks;
mdblocks = ext4_calc_metadata_amount(inode, total);
@@ -1539,6 +1541,10 @@ static int ext4_da_reserve_space(struct inode *inode, int nrblocks)
if (ext4_claim_free_blocks(sbi, total)) {
spin_unlock(&EXT4_I(inode)->i_block_reservation_lock);
+ if (ext4_should_retry_alloc(inode->i_sb, &retries)) {
+ yield();
+ goto repeat;
+ }
return -ENOSPC;
}
EXT4_I(inode)->i_reserved_data_blocks += nrblocks;
@@ -1825,20 +1831,18 @@ static void ext4_da_block_invalidatepages(struct mpage_da_data *mpd,
static int mpage_da_map_blocks(struct mpage_da_data *mpd)
{
int err = 0;
+ struct buffer_head new;
struct buffer_head *lbh = &mpd->lbh;
sector_t next = lbh->b_blocknr;
- struct buffer_head new;
/*
* We consider only non-mapped and non-allocated blocks
*/
if (buffer_mapped(lbh) && !buffer_delay(lbh))
return 0;
-
new.b_state = lbh->b_state;
new.b_blocknr = 0;
new.b_size = lbh->b_size;
-
/*
* If we didn't accumulate anything
* to write simply return
@@ -1871,6 +1875,10 @@ static int mpage_da_map_blocks(struct mpage_da_data *mpd)
lbh->b_size >> mpd->inode->i_blkbits, err);
printk(KERN_EMERG "This should not happen.!! "
"Data will be lost\n");
+ if (err == -ENOSPC) {
+ printk(KERN_CRIT "Total free blocks count %lld\n",
+ ext4_count_free_blocks(mpd->inode->i_sb));
+ }
/* invlaidate all the pages */
ext4_da_block_invalidatepages(mpd, next,
lbh->b_size >> mpd->inode->i_blkbits);
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 2c10b5058a8..e4f30de11a9 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -4395,7 +4395,12 @@ ext4_fsblk_t ext4_mb_new_blocks(handle_t *handle,
/*
* With delalloc we already reserved the blocks
*/
- if (ext4_claim_free_blocks(sbi, ar->len)) {
+ while (ar->len && ext4_claim_free_blocks(sbi, ar->len)) {
+ /* let others to free the space */
+ yield();
+ ar->len = ar->len >> 1;
+ }
+ if (!ar->len) {
*errp = -ENOSPC;
return 0;
}