bcachefs: Check if extending inode differently

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In bch2_extent_update(), we have to update the inode if i_size is
changing (the file is being extend) or if i_sectors is changing, but we
want to avoid touching the inode if it's not necessary.

Change sum_sector_overwrites() to also check if there's already data
above where we're writing to - this means we're definitely not extending
the file.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

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Kent Overstreet 2019-10-09 09:44:36 -04:00 • committed by Kent Overstreet

parent 14989d547e

commit daf3fe502a

3 changed files with 50 additions and 24 deletions

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76

fs/bcachefs/fs-io.c

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2

fs/bcachefs/fs-io.h

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2

fs/bcachefs/reflink.c

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